Soil physical conditions and crop production : proceedings of a conference /
organized by the soil scientists of the Agricultural Development and Advisory Service, January 3-5, 1972.
- London : H.M. Stationery Off., 1975.
- vi, 505 p. : ill., maps ; 25 cm.
- Technical bulletin - Ministry of Agriculture, Fisheries and Food ; 29 .
- Technical bulletin (Great Britain. Ministry of Agriculture, Fisheries and Food) ; 29. .