TY  - RPRT
TI  - Palynological evidence for the historic expansion of juniper and desert shrubs in Arizona, U.S.A.
AU  - O.K. Davis
AU  - R. M. Turner
PY  - 1986
DO  - 10.1016/0034-6667(86)90026-6
UR  - https://pubs.usgs.gov/publication/70014541
ID  - 70014541
ER  -