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E
M. Roy Haferkamp
,
Ganskopp, D. C.
,
Miller, R. F.
,
Marietta, K. L.
, and
Couche, D.
,
“
Establishing grasses by imprinting in the Northwestern United States
”
, in
Symposium on Seed and Seedbed Ecology of Rangeland Plants, Tucson, Ariz.(USA), 21-23 Apr 1987
, 1987.
P
D. E. Wilkins
,
Haferkamp, M. Roy
, and
Ganskopp, D. C.
,
“
Power Requirements of an Imprinter and Rangeland Drill
”
,
Journal of Range Management
, vol. 43, no. 3, p. 274, 1990.