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Isaac, Leo Anthony ,  [Reproductive habits of douglas-fir] ,  Reproductive habits of douglas-fir

Ronco, Franck, jr. ,  Alexander, R.R. ,  Gottfried, G.J. ,  [Silviculture of mixed conifer forest in the Southwest] ,  Silviculture of mixed conifer forest in the Southwest

Harlow, William Morehouse ,  Harrar, Ellwood Scott ,  [Textbook of dendrology: covering the important trees of the United States and Canada] ,  Textbook of dendrology: covering the important trees of the United States and Canada

Hayes, Doris W. ,  [Key to important woody plants of eastern Oregon and Washington] ,  Key to important woody plants of eastern Oregon and Washington

Grimm, William Carey ,  [The book of trees] ,  The book of trees

Bailey, L.H. ,  [The cultivated conifers in North America: comprising the pine family and de taxads] ,  The cultivated conifers in North America: comprising the pine family and de taxads