TY  - RPRT
TI  - Evidence for a growing population of eastern migratory monarch butterflies is currently insufficient
AU  - Wayne E. Thogmartin
AU  - Jennifer A Szymanski
AU  - Emily L. Weiser
PY  - 2020
DO  - 10.3389/fevo.2020.00043
UR  - https://pubs.usgs.gov/publication/70208725
ID  - 70208725
ER  -