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- [2] US FARM EXPORT OUTLOOK DIMS AS SOME MAJOR CROPS FALTER FOREIGN AGRICULTURE, 1974, 12 (34): : 7 - 7
- [3] USE OF BIOLOGY TO INCREASE THE PRODUCTION OF PULSE CROPS ROSTLINNA VYROBA, 1980, 26 (10): : 1009 - 1010
- [5] Production of export crops depends on the worldwide annual use of pesticides ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2012, 244
- [8] CEYLON - EXPORT ECONOMY IN TRANSITION - SNODGRASS,DR ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1967, 371 (MAY): : 240 - 241