Shirlaw, D. (1962). Soil fertility and field methods of analysis: A guide for agricultural students and advisers, gardeners and horticulturalists. Cassell & company.
Chicago Edition CitationShirlaw, D.W.Gilchrist. Soil Fertility and Field Methods of Analysis: A Guide for Agricultural Students and Advisers, Gardeners and Horticulturalists. London: Cassell & company, 1962.
Cita MLAShirlaw, D.W.Gilchrist. Soil Fertility and Field Methods of Analysis: A Guide for Agricultural Students and Advisers, Gardeners and Horticulturalists. Cassell & company, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.