Christmas tree varieties of scotch pine, douglas-fir and white fir for north central United States /
by Jonathan W. Wright.

APA Citation

Wright, J. W. (1971). Christmas tree varieties of scotch pine, douglas-fir and white fir for north central United States. East Lansing, Mich.: Michigan State University.

MLA Citation

Wright, Jonathan W. Christmas Tree Varieties of Scotch Pine, Douglas-fir And White Fir for North Central United States. East Lansing, Mich.: Michigan State University, 1971.

Warning: These citations may not always be complete (especially for serials).