Union Catalogue of Belgian Libraries
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Book
The soil nitrogen index and its calibration with crop performance to improve fertilizer efficiency on arable soils
Author:
Robinson, J. B. D.
ISBN: 0851983405 9780851983400
Year: 1975
Publisher: Farnham Royal: Commonwealth agricultural bureaux,
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The organisation and methods of agricultural research : The record of a course sponsored by the ministry of overseas development and held in the university of Bristol, April 2-15, 1970
Author:
Robinson, J.B.D.
Year: 1970
Publisher: [place of publication not identified] [publisher not identified]
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An annotated bibliography of colour illustrated mineral deficiency symptoms in tropical crops
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