00629     2200205   4500001002100000035002000021245010400041110006500145260006400210300002900274084001100303082001100314650002200325650001600347650001000363650001700373650001500390990000900405990000900414INLIS000000000002023  a0010-0121000389  aLaporan penelitian pemetaan tingkat bahaya erosi Sub Das Blonkeng Ds Das Progo propinsi Jawa Tengah  aSub Balai Rehabilitasi Lahan dan Konservasi Tanah Opak Progo  aYogyakartabFakultas Geografi. Universitas Gajah Madac1988  avi, 41 p.c: ill ; 32 cm  a631.45  a631.45  aEROSI-JAWA TENGAH  aJAWA TENGAH  aEROSI  aDAS BLONKENG  aDAS PROGO.  a3070  a3070