| Call number | Item |
| Q | Science (Go to start of category) |
| QH-QR | Biological Sciences (Go to start of category) |
| QH | Natural History and Biology (General) (Go to start of category) |
| QH49 .C34 | ![[Info]](https://onlinebooks.library.upenn.edu/info.gif) Nature Study With Common Things: An Elementary Laboratory Manual (New York et al.: American Book Co., c1904), by Marion Hamilton Carter (page images at HathiTrust) |
| QH51 .H68 | Nature Study and Life (Boston and London: Ginn and Co., 1902), by Clifton F. Hodge, contrib. by G. Stanley Hall |
| QH53 .V5 | Nature Guiding (Ithaca, NY: Comstock Pub. Co., 1926), by William Gould Vinal (page images at HathiTrust) |
| QH68 .B9 | The Family Aquarium: or, Aqua Vivarium (New York: Dick and Fitzgerald, c1858), by Henry D. Butler (multiple formats at archive.org) |
| QH68 .G62 1854 | The Aquarium: An Unveiling of the Wonders of the Deep Sea (London: J. Van Voorst, 1854), by Philip Henry Gosse (multiple formats at archive.org) |
| QH68 .G62 1856 | The Aquarium: An Unveiling of the Wonders of the Deep Sea (second edition; London: J. Van Voorst, 1856), by Philip Henry Gosse |
| QH68 .H92 1857 | Ocean Gardens: The History of the Marine Aquarium, and the Best Methods Now Adopted for its Establishment and Preservation (London: Sampson Low, Son, and Co., 1857), by Henry Noel Humphreys (multiple formats at archive.org) |
| QH70 .C8 | Curator (partial serial archives) |
| QH71 .H89 | Allgemeine Einführung in die Naturwissenschaften (second edition, in German; Strasbourg: K. J. Trübner, 1890), by Thomas Henry Huxley, trans. by Oscar Schmidt (page images at HathiTrust) |
| QH71 .V5 A3 | Elenchus Tabularum, Pinacothecarum, Atque Nonnullorum Cimeliorum, In Gazophylacio Levini Vincent (in Latin and French; Haarlem, NL: The author, 1719), by Levinus Vincent, contrib. by Romeyn de Hooghe (multiple formats at archive.org) |
| QH75 .A1 M38 1993 | The Ramsar Convention on Wetlands: Its History and Development (originally published 1993), by G. V. T. Matthews (illustrated HTML at ramsar.org) |
| QH75 .A1 N32 | Biodiversity (1988), ed. by Edward O. Wilson (page images with commentary at NAP) |
| QH75 .A1 T5 | Journal of Threatened Taxa (2009-) (full serial archives) |
| QH75 .C66153 2010 | Conservation Biology for All (Oxford and New York: Oxford University Press, 2010), ed. by Navjot S. Sodhi and Paul R. Ehrlich (PDF with commentary at conbio.org) |
| QH75 .C6818 | Conserving Biodiversity: A Research Agenda for Development Agencies (1992), by National Research Council Board on Science and Technology for International Development (page images with commentary at NAP) |
| QH75 .E26 1986 | Ecological Knowledge and Environmental Problem-Solving: Concepts and Case Studies (1986), by National Research Council Commission on Life Sciences (page images with commentary at NAP) |
| QH75 .P8 1998 | Protection of Global Biodiversity: Converging Strategies (Durham, NC and London: Duke University Press, 1998), ed. by Lakshman D. Guruswamy and Jeffrey A. McNeely, contrib. by Peter H. Raven, Ariel E. Lugo, Robert B. Horsch, Robert T. Fraley, Laura L. Jackson, Gregory Benford, Graciela Chichilnisky, G. M. Heal, Ralph David Simpson, Roger A. Sedjo, John W. Reid, Elinor Ostrom, Walter V. Reid, Anil K. Gupta, Gary H. Toenniessen, S. James Anaya, S. Todd Crider, Ana M. Sittenfeld, Annie Lovejoy, Bryan G. Norton, Mark Sagoff, Christopher D. Stone, Yvonne M. Cripps, and Brent R. Hendricks (page images at HathiTrust) |
| QH75 .T67 1993 | Towards the Wise Use of Wetlands: Report of the Ramsar Convention Wise Use Project (most maps and illustrations omitted; originally published 1993), ed. by T. J. Davis (HTML at ramsar.org) |
| QH75 .W432 2019 | What Works in Conservation (Cambridge, UK: Open Book Publishers, c2019), ed. by William J. Sutherland, Lynn V. Dicks, Nancy Ockendon, and Rebecca K. Smith (PDF and HTML with commentary at Open Book Publishers) |
| QH75 .W432 2021 | What Works in Conservation (Cambridge, UK: Open Book Publishers, c2021), ed. by William J. Sutherland, Lynn V. Dicks, Silviu O. Petrovan, and Rebecca K. Smith (multiple formats with commentary at Open Book Publishers) |
| QH75 .W474 1997 | Wetlands, Biodiversity and the Ramsar Convention: The Role of the Convention on Wetlands in the Conservation and Wise Use of Biodiversity (originally published 1997), ed. by A. J. Hails (illustrated HTML at ramsar.org) |
| QH76 .D3 | Wetlands Losses in the United States, 1780's to 1980's (1990), by Thomas E. Dahl (PDF at fws.gov) |
| QH76 .G73 1986 | Grassroots Conservation of Biological Diversity in the United States: Background Paper #1 (1986), by United States Congress Office of Technology Assessment |
| QH76 .N264 1993 | A Biological Survey for the Nation (1994), by National Research Council Committee on the Formation of the National Biological Survey (HTML with commentary at NAP) |
| QH76 .N665 1995 | Endangered Ecosystems of the United States: A Preliminary Assessment of Loss and Degradation, by Reed F. Noss, Edward T. LaRoe, and J. Michael Scott (illustrated HTML at USGS) |