Items where Author is "O'Brien, D. G"
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O'Brien, D. G (1930) A Nematode Disease of Potatoes Caused by Heterodera Schachtii (Schmidt). PhD thesis, University of Glasgow.
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O'Brien, D. G (1930) A Nematode Disease of Potatoes Caused by Heterodera Schachtii (Schmidt). PhD thesis, University of Glasgow.