TY - BOOK TI - Final report: international hydrological programme : intergovernmental council, fourth session, Paris, 28-29 August 1981 T2 - United Nations Educational, Scientific, and Cultural Organization SN - ISBNSc2000 U1 - 551.48 PY - 1981/// CY - Paris PB - UNESCO KW - Hydrology N1 - 0 ER -