na INLIS000000000011492 20250814095436 ta 250814 g 0 eng 0010-0825000005 63 63 WER e Wertz, V.R Economic trends in agriculture thrid Edition Michigan : J.W. Edwards Publish, Inc., 1954 x, 409 p : ills. ; 21.5 cm keadaan ekonomi Pertanian agriculture Economic trends 2273/PSEKP/2025