631.41
S683                Soil phosphorus: proceedings of a conference organized by the Soil Chemists of the National Agricultural Advisory Service, October 4th-5th, 1962 . - London : Her Majesty's Stationery Office,1965 . - v,159p.; maps, tables . - Ministry of Agriculture, Fisheries and Food; Technical bulletin no.13 .

Central Inland Fisheries Research Institute

CIFRI