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Ronald Wayne Campbell
2 cilt bulundu.
Cilt sonuçları
Influence of some spray materials on the chlorophyll content of apple leaves
Ronald Wayne Campbell · Kansas State College of Agriculture and Applied Science
36 sayfa · 1946
Spraying and dusting residues in agriculture / Chlorophyll.
Ian Mctaggart-Cowan
Wayne Campbell, Ronald D. Jakimchuck, Dennis A. Demarchi · Harbour Publishing Company, Limited
416 sayfa · 2015
Biologists / Canada, biography / Conservationists / College teachers