TY  - RPRT
TI  - How to obtain information on nongame migratory birds: Patuxent Wildlife Research Center
AU  - M.A. Howe
AU  - R.M. Erwin
AU  - M.R. Fuller
AU  - C.E. Keller
AU  - C.S. Robbins
PY  - 1989
UR  - https://pubs.usgs.gov/publication/5211399
ID  - 5211399
ER  -