TY - BOOK ED - United Nations Educational Scientific and Cultural Organization, TI - Reviews of research on: Arid zone hydrology T2 - Arid zone programme - 1 U1 - 551.48 21st.ed. PY - 1935/// CY - Paris PB - United Nations Educational Scientific and Cultural Organization KW - Hydrology KW - Ground water KW - Water resource - Utilization ER -