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Inventions intended for use in agriculture and related industries : international comparisons
Evenson, Robert E., (1991)
Comparative invention performance of major industrial countries : patterns and explanations
Glismann, Hans H., (1986)
Glismann, Hans H., (1988)
The political economy of genetically modified foods
Evenson, Robert E., (2007)
Agricultural technology : international dimensions ; (with emphasis on rice)
Evenson, Robert E., (1993)
Patent data by industry : evidence for invention potential exhaustion?