TY - BOOK T1 - Concepts and modeling in ground-water hydrologya self-paced training course / DA - 1991] CY - Reston, Va. : CY - Denver, Colo. : AU - Franke, O. Lehn. CN - I 19.76: PB - U.S. Geological Survey ; PB - Books and Open-File Reports Section [distributor, PP - Reston, Va. : PP - Denver, Colo. : PY - 1991] N1 - Distributed to depository libraries in microfiche. N1 - Shipping list no.: 93-0046-M. N1 - "December 1991." ID - 217415 KW - Hydrologic models. KW - Groundwater TI - Concepts and modeling in ground-water hydrologya self-paced training course / ER -