Clayton, D. D. (1981). Black's agricultural dictionary. A & C Black publishers.
Chicago-čujuhus (17. p.)Clayton, D.B. Dalal. Black's Agricultural Dictionary. London: A & C Black publishers, 1981.
MLA-čujuhus (9. p.)Clayton, D.B. Dalal. Black's Agricultural Dictionary. A & C Black publishers, 1981.
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