TY  - RPRT
TI  - Floristic surveys of Saguaro National Park Protected Natural Areas
AU  - W. L. Halvorson
AU  - B.S. Gebow
PY  - 2000
DO  - 10.3133/2002312
UR  - https://pubs.usgs.gov/publication/2002312
ID  - 2002312
ER  -