TY  - RPRT
TI  - Habitat use by the endangered Karner blue butterfly in oak woodlands: The influence of canopy cover
AU  - Ralph Grundel
AU  - Noel B. Pavlovic
AU  - Christina L. Sulzman
PY  - 1998
DO  - 10.1016/s0006-3207(97)00165-1
UR  - https://pubs.usgs.gov/publication/1000625
ID  - 1000625
ER  -