TY  - RPRT
TI  - Geographical and climatic limits of needle types of one- and two-needled pinyon pines
AU  - K.L. Cole
AU  - J. Fisher
AU  - S.T. Arundel
AU  - J. Cannella
AU  - S. Swift
PY  - 2007
DO  - 10.1111/j.1365-2699.2007.01786.x
UR  - https://pubs.usgs.gov/publication/70033486
ID  - 70033486
ER  -