Abel, N.O.J.Prinsley, R.T. (eds.)Publication year: 1988Source publication informationSeries: CSC Technical Publication Series; 252Source: Proceedings and Recommendations of a Workshop, Gweru, Zimbabwe, 12-14 April 1988 PublisherCommonwealth Science Council|Forestry CommissionLondon|Harare Publisher reference: Commonwealth Science Council|Forestry Commission