na INLIS000000000002895 20250304084743 0010-0121001261 Research metodology in applied economics and conducting economics research Ethridge, Don Erwin Ames : Iowa State University Press, 1995 xi, 271 p. : ill. ; 22 cm 167 ETH r 167 ECONOMICS RESEARCH METODOLOGY METODOLOGI PENELITIAN. 250304 g 0 ind 1748/PSEKP/2025