World food production--environment pesticides
International Congress of Pesticide Chemistry, 4th, Zurich,
World food production--environment pesticides - Oxford Pergamon Pr. 1979 - 28cm. 61p
PESTICIDES -- CONGRESSES
PESTICIDES -- CONGRESSES PESTICIDES -- ENVIRONMENTAL ASPECTS
632.95 I-5W
World food production--environment pesticides - Oxford Pergamon Pr. 1979 - 28cm. 61p
PESTICIDES -- CONGRESSES
PESTICIDES -- CONGRESSES PESTICIDES -- ENVIRONMENTAL ASPECTS
632.95 I-5W