Yazar
j kuhr
11 cilt bulundu.
Ronald J. Kuhr · IOS Press
332 sayfa · 1998
Pesticides / Toxicity / Congresses / Environmental exposure / Toxicology
Ronald J. Kuhr · American Chemical Society
183 sayfa · 1987
Pesticides / Safety measures / Congresses / Toxicology
Richard C. Staples, Ronald J. Kuhr · Springer
235 sayfa · 1980
Cultivated Plants / Agriculture / Congresses / Research / Developing countries
James D. Burton, Ronald J. Kuhr · IOS Press
211 sayfa · 1997
Herbicides / Toxicology / Pharmacology / Chemistry
L Michelle Rosier, Christine W. Kuhr, Susan J. Lehman, Melodye W. Snyder, Christine W. Kohr · Bob Jones Univ Pr
Sayfa sayısı yok · 2005
Children: Grades 1-2 / Language Arts - Handwriting / Juvenile Nonfiction
Ernest Hodgson, Ronald J. Kuhr · M. Dekker
593 sayfa · 1990
Physiological effect / Safety measures / Insecticides / Physiology