共 33 条
[1]
Allen K.R., 1980, CONSERVATION MANAGEM
[3]
BAKER CS, 1989, NPSNR8901 TECH REP
[4]
Bigg M. A., 1990, REP INT WHALING COMM, P383
[5]
BLANE J, 1990, THESIS U TORONTO ONT
[6]
BLOCH D, 1988, Rit Fiskideildar, V11, P55
[8]
DAY SV, 1987, THESIS U RHODE ISLAN
[9]
DECKER DJ, 1987, VALUING WILDLIFE EC
[10]
Driver B. L., 1970, ELEMENTS OUTDOOR REC, P9