CONFERENCE on soil potassium and magnesium (London: 1967)
Soil potassium and magnesium /organized by the Soil chemists of the National Agricultural advisory service17th-18th October 1963, London - London Her Majesty's Stationery Office 1967 - vii, 195 p.
116612
631.41 / CON
Soil potassium and magnesium /organized by the Soil chemists of the National Agricultural advisory service17th-18th October 1963, London - London Her Majesty's Stationery Office 1967 - vii, 195 p.
116612
631.41 / CON