| Call number | Item |
| Q | Science (Go to start of category) |
| QH-QR | Biological Sciences (Go to start of category) |
| QR | Microbiology (Go to start of category) |
| QR89.7 | ![[Info]](http://onlinebooks.library.upenn.edu/info.gif) Biological Nitrogen Fixation: Research Challenges; A Review of Research Grants Funded by the U.S. Agency for International Development, by National Research Council Board on Science and Technology for International Development (HTML at NAP) |
| QR89.7 .P83 1977 | ![[X-Info]](http://onlinebooks.library.upenn.edu/infouc.gif) Report of the Public Meeting on Genetic Engineering for Nitrogen Fixation : October 5-6, 1977, held at the National Academy of Sciences, Washington, D.C. / edited by Alexander Hollaender ; [prepared for National Science Foundation, Directorate for Research Applications, RANN/Research Applied to National Needs]. ([Washington] : NSF : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1977), by Public Meeting on Genetic Engineering for Nitrogen Fixation, (page images at HathiTrust) |
| QR 101 .K26 | Weitere untersuchungen über stickstoffbindende bakterien ... (Kiel, Schmidt & Klaunig, 1906), by Max Keding (page images at HathiTrust; US access only) |
| QR101 .M55 | Les organismes vivants de l'atmosphere / par m.P. Miquel. (Paris : Gauthier-Villars, 1883), by Pierre Miquel (page images at HathiTrust; US access only) |
| QR101 .P9 | Dust and its dangers, by T. Mitchell Prudden. (New York, London, G.P. Putnam's sons, 1910), by T. Mitchell Prudden (page images at HathiTrust; US access only) |
| QR101 .T915 | Essays on the floating matter of the air, in relation to putrefaction and infection. By John Tyndall. (New York, D. Appleton, 1882), by John Tyndall (page images at HathiTrust) |
| QR101 .T98 | Essays on the floating-matter of the air in relation to putrefaction and infection/ by John Tyndall. (New York : D. Appleton and Co., 1884), by John Tyndall (page images at HathiTrust) |
| QR105 .A68 | The Aquatic environment: microbial transformations and water management implications; symposium sponsored by Environmental Protection Agency Office of Water Program Operations, held in October, 1972. Edited by Leonard J. Guarraia and Richard K. Ballentine. ([Washington, Environmental Protection Agency; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1974]) (page images at HathiTrust) |
| QR 105 .C63 | The bacteriology of surface waters in the tropics, by Wm. Wesley Clemesha ... (Calcutta, Thacker, Spink & co; London, E. & F.N. Spon, ltd., 1912), by William Wesley Clemesha (page images at HathiTrust; US access only) |
| QR 105 .F83 | Micro-organisms in water. Their significance, identification and removal, together with an account of the bacteriological methods employed in their investigation. Specially designed for the use on those connected with the sanitary aspects of water-supply. By Percy Frankland, ... and Mrs. Percy Frankland ... (London, New York, Longmans, Green, and Co., 1894), by Percy Frankland (page images at HathiTrust; US access only) |
| QR 105 .H75 | Effects of protozoa on the fate of particulate carbon, by Harvey W. Holm [and] Forrest A. Smith. (Corvallis, Or., National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency; for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington, 1973), by Harvey W. Holm (page images at HathiTrust; US access only) |
| QR105 .L975 1893 | Diagnostik der Bakterien des Wassers / von Alexander Lustig ; ins Deutsche übers. von R. Teuscher mit einem Vorwort von P. Baumgarten. (Jena : G. Fischer, 1893), by Alessandro Lustig (page images at HathiTrust; US access only) |
| QR105 .P92 | Elements of water bacteriology, with special reference to sanitary water analysis. By Samuel Cate Prescott ... and Charles-Edward Amory Winslow. (New York, J. Wiley & sons; [etc.,etc.], 1904), by Samuel Cate Prescott (page images at HathiTrust) |
| QR105 .P93 | Elements of water bacteriology, with special reference to sanitary water analysis. By Samuel Cate Prescott and Charles-Edward Amory Winslow. (New York, J. Wiley, 1908), by Samuel Cate Prescott (page images at HathiTrust) |
| QR105 .P93 1911 | Elements of water bacteriology, with special reference to sanitary water analysis. By Samuel Cate Prescott and Charles-Edward Amory Winslow. (New York, J. Wiley and Sons, 1911), by Samuel Cate Prescott (page images at HathiTrust) |
| QR105 .P93 1913 | Elements of water bacteriology, with special reference to sanitary water analysis, by Samuel Cate Prescott ... and Charles-Edward Amory Winslow. (New York, J. Wiley & sons, inc.;[etc., etc.], 1913), by Samuel Cate Prescott (page images at HathiTrust) |
| QR105 .P93 1913 | Elements of water bacteriology, with special reference to sanitary water analysis, by Samuel Cate Prescott and Charles-Edward Amory Winslow. (New York, Wiley, 1913), by Samuel Cate Prescott (page images at HathiTrust) |
| QR105 .R4 | A study of hydrogen sulphide production by Bacteria and its significance in the sanitary examination of water ... (Ithaca, N.Y., [1914]), by Harry Westfall Redfield (page images at HathiTrust) |
| QR 105 .Z75 1890 | Die Bakterien unserer Trink- und Nutzwässer, insbesondere des Wassers der chemnitzer Wasserleitung. (Chemnitz : C. Brunner, 1890-), by Oscar Emil Reinhold Zimmermann (page images at HathiTrust; US access only) |
| QR111 | Experiments in soil bacteriology. (Minneapolis, Burgess Pub. Co., 1957), by O. N. Allen (page images at HathiTrust) |
| QR 111 .B86 | Assimilation of organic nitrogen by Zea mays and the influence of Bacillus subtilis on such assimilation ... ([Baltimore, 1917]), by Reed Oshea Brigham (page images at HathiTrust) |
| QR111 .F75 | A laboratory manual of soil bacteriology, (Philadelphia London, W. B. Saunders company, 1916), by Edwin Broun Fred (page images at HathiTrust; US access only) |
| QR111 .F8 | Influence of carbonates of magnesium and calcium on bacteria of certain Wisconsin soils / by H. L. Fulmer. (Washington, D.C. : Government Printing Office, 1918), by Henry Luman Fulmer (page images at HathiTrust) |
| QR111 .G5 | The isolation and study of nitrifying bacteria / by W. M. Gibbs. ([Baltimore, 1919]), by William Merriott Gibbs (page images at HathiTrust) |
| QR111 .H79 1916 | Soil bacteria and phosphates / by Cyril G. Hopkins and Albert L. Whiting. (Urbana, Ill. : University of Illinois Agricultural Experiment Station, 1916), by Cyril G. Hopkins (page images at HathiTrust) |
