Determination of economic injury levels and economic threshodls of viruliferous cereal aphids on a winter and a spring wheat / [mikrofilem]

Thesis (PhD) - Purdue University, 1987

Bibliografische gegevens
Hoofdauteur:	432490 Brahim, Noureddine
Formaat:
Onderwerpen:	Agriculture Wheat Winter wheat Cereal products

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