Soil fertility and field methods of analysis : A guide for agricultural students and advisers, gardeners and horticulturalists - D.W.Gilchrist Shirlaw (London Cassell and Company Ltd, 1962)
D.W.Gilchrist Shirlaw: Soil fertility and field methods of analysis : A guide for agricultural students and advisers, gardeners and horticulturalists. London. Cassell and Company Ltd, 1962.--(631.42SHI)
ENGLISH