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Isabel Bertolaccini, Etelvina Núñez-Pérez, Emilio Jorge Tizado
Pág. 233 - 242
The study was done during the spring, summer and fall of 1998 and 1999. Samples were taken at random from legume crops and spontaneous plants adjacent to them in the province of León (Spain). Observations were made on the following crops: Medicago sativa...
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