The role of water in agriculture: based on papers and discussions at a symposium held at the Welsh Plant Breeding Station near Aberystwyth on March 19th, 1969 edited by James A. Taylor - Oxford Pergamon Press 1970 - xxii, 230 Páginas il. 24 cm - (University College of Wales, Aberystwyth Memorandum no. 12 (1969)) .

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