More about P. H. Wessels:
| | Books by P. H. Wessels: Books in the extended shelves: Wessels, P. H. (Philip Henry), 1880-: Asparagus fertilizer experiment on Long Island (Cornell University Agricultural Experiment Station, 1937), also by H. C. Thompson (page images at HathiTrust) Wessels, P. H. (Philip Henry), 1880-: Controlling common scab of the potato on Long Island by the addition of mercury compounds to the fertilizer mixture and the relation of soil reaction to the treatment (New York State Agricultural Experiment Station, 1939), also by H. S. Cunningham (page images at HathiTrust) Wessels, P. H. (Philip Henry), 1880-: Cultivation experiments with certain vegetable crops on Long Island (Cornell University Agricultural Experiment Station, 1931), also by H. C. Thompson and H. S. Mills (page images at HathiTrust) Wessels, P. H. (Philip Henry), 1880-: The effect of sodium manuring on the composition of plants (Agricultural Experiment Station of the Rhode Island State College, 1913), also by Burt L. Hartwell (page images at HathiTrust) Wessels, P. H. (Philip Henry), 1880-: Experiments with cover crops on Long Island (Cornell University Agricultural Experiment Station, 1937), also by John Daniel Hartman (page images at HathiTrust) Wessels, P. H. (Philip Henry), 1880-: Results of sweet-corn suckering experiments on Long Island (Cornell University Agricultural Experiment Station, 1930), also by H. C. Thompson and H. S. Mills (page images at HathiTrust) Wessels, P. H. (Philip Henry), 1880-: Soil-acidity studies with potatoes, cauliflower and other vegetables on Long Island (Cornell University Agricultural Experiment Station, 1932) (page images at HathiTrust) Wessels, P. H. (Philip Henry), 1880-: Tomato fertilizer experiments on Long Island (Cornell University Agricultural Experiment Station, 1937), also by John Daniel Hartman and Paul Work (page images at HathiTrust)
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