Black walnut on Kansas strip mine spoils :
some observations 25 years after pruning /
by Alex L. Shigo ... [et al.].
APA Citation
Shigo, A. L., United States. Forest Service., Northeastern Forest Experiment Station (Radnor, P. (1978). Black walnut on Kansas strip mine spoils: some observations 25 years after pruning. Broomall, Pa.: Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station.
MLA Citation
Shigo, Alex L., 1930-, United States. Forest Service, and Pa.) Northeastern Forest Experiment Station (Radnor. Black Walnut On Kansas Strip Mine Spoils: Some Observations 25 Years After Pruning. Broomall, Pa.: Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station, 1978.
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