edited by A.J. Grayson

Commonwealth Forestry Association : Oxford Forestry Institute [1995]

A.J. Grayson

CAB Internatinal c1993

所蔵館8館

by D. R. Johnston, A. J. Grayson, R. T. Bradley

Faber 1967

所蔵館15館

by F. C. Hummel and A. J. Grayson

Forestry Commission 1962

所蔵館1館