Authors: BUTLER WI STEHN RA BALOGH GR

Citation: Wi. Butler et al., GIS FOR MAPPING WATERFOWL DENSITY AND DISTRIBUTION FROM AERIAL SURVEYS, Wildlife Society bulletin, 23(2), 1995, pp. 140-147

Authors: BUTLER WI HODGES JI STEHN RA

Citation: Wi. Butler et al., LOCATING WATERFOWL OBSERVATIONS ON AERIAL SURVEYS, Wildlife Society bulletin, 23(2), 1995, pp. 148-154

Authors: STEHN RA DAU CP CONANT B BUTLER WI

Citation: Ra. Stehn et al., DECLINE OF SPECTACLED EIDERS NESTING IN WESTERN ALASKA, Arctic, 46(3), 1993, pp. 264-277