na INLIS000000000063985 20250630012654 0010-0625000164 ta 250630 g d eng 639.2(061.3) 639.2(061.3) CRU b CRUTCHFIELD, James A. Biological and economic aspects of fisheries management / James A. Crutchfield Cet. 1 Seattle : University of Washington, 1959 vi, 160p. ; 27 cm. 270/60