TY  - RPRT
TI  - Interpreting surveys to estimate the size of the monarch butterfly population: Pitfalls and prospects
AU  - John M. Pleasants
AU  - Myron P. Zalucki
AU  - Karen S. Oberhauser
AU  - Lincoln P. Brower
AU  - Orley R. Taylor
AU  - Wayne E. Thogmartin
PY  - 2017
DO  - 10.1371/journal.pone.0181245
UR  - https://pubs.usgs.gov/publication/70190008
ID  - 70190008
ER  -