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		No cover image available No cover image available Studies on the variable efficiency of aphid vectors in transmitting plant viruses and epidemiology of potato viruses Y and leafroll : thesis submitted for the degree of Philophy in Botany in the faculty of science Himachal Pradesh University Simla 1981 Mahender Nath Singh by Singh, Mahender Nath. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Simla Himachal Pradesh University 1981Availability: Items available for loan: 1 . Place hold Add to cart (remove)

		No cover image available No cover image available Studies on the variable efficiency of aphid vector in transmitting plant viruses Mahendra Nath Singh by Singh, Mahender Nath. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Simla Himachal Pradesh University 1977Availability: Items available for loan: 1 . Place hold Add to cart (remove)

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