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Insect, disease and weed control

Insect, disease and weed control
Paper図書
E. R. De Ong, D. Bishop and J. L. Bishop. JrChemical Pub. Co., Inc.1972.
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. Bishop, D. Bishop, J.

Chemistry and uses of pesticides 2nd ed. (Modern Asia ed.)

Chemistry and uses of pesticides 2nd ed. (Modern Asia ed.)
Paper図書
by E. R. de OngReinhold1962
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph)

Chemistry and uses of pesticides 2nd ed. (Modern Asia ed.)

Chemistry and uses of pesticides 2nd ed. (Modern Asia ed.)
Paper図書
by E. R. de OngReinhold1962
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph), 1882-

Chemistry and uses of pesticides 2nd ed. of "Chemistry and uses of insecticides"

Chemistry and uses of pesticides 2nd ed. of "Chemistry and uses of insecticides"
Digital図書
by E.R. de OngReinhold1956
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph)

Chemistry and uses of pesticides 2nd ed. of "Chemistry and uses of insecticides"

Chemistry and uses of pesticides 2nd ed. of "Chemistry and uses of insecticides"
Paper図書
by E.R. de OngReinholdc1956
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph), 1882-

Insect, fungus and weed control

Insect, fungus and weed control
Paper図書
by E.R. De OngChemical Publishingc1953
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph)

Insect, fungus and weed control

Insect, fungus and weed control
Paper図書
by E.R. De OngChemical Publishingc1953
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph), 1882-

Chemistry and uses of insecticides

Chemistry and uses of insecticides
Paper図書
by E.R. de OngReinhold1948
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph)

Chemistry and uses of insecticides

Chemistry and uses of insecticides
Paper図書
by E.R. de OngReinhold1948
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph), 1882-

A cooperative campaign to save the horse bean crop

A cooperative campaign to save the horse bean crop
Paper図書
by E.R. De Ong and H.E. Woodworth[California State Dept. of Agriculture][1921]
Other Libraries in Japan
  • Author HeadingDe Ong, E. R. (Elmer Ralph) Woodworth, H. E...

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