National Hardwoods Programme : report of the eighth meeting and second meeting of the Uneven-aged Silviculture Group,7 January 1988 /
National Hardwoods Programme.Meeting(8th :1988 :Oxford, Oxfordshire)
Savill, P. S.
Oxford Forestry Institute.Department of Plant Sciences.
Oxford : Oxford Forestry Institute in conjunction with Nature Conservancy Council,
1989.