TY  - RPRT
TI  - First flowering dates and flowering periods of prairie plants at Woodworth, North Dakota
AU  - J.M. Callow
AU  - H.A. Kantrud
AU  - K.F. Higgins
PY  - 1992
UR  - https://pubs.usgs.gov/publication/1001344
ID  - 1001344
ER  -