Black walnut on Kansas strip mine spoils
Subtitle: some observation 25 years after pruning
By: A. L. Shigo, N. F. Rogers, E. A. M. Jr. and D. T. Funk.
Contributors: Rogers, N. F.; Jr, E. A. M; Funk, D. T.
Publisher: s.n
Published: 1978
Place of publication: S.l
Notes: 13