TY - BOOK T1 - Nitrogen isotopes in nitrate from surface water and shallow groundwater at Sixmile Creek, southeastern Colorado DA - 1995. CY - [Reston, Va.] : AU - Johnson, Craig A. AU - Zielinski, Robert A. AU - Asher-Bolinder, Sigrid. VL - 95-536 CN - I 19.76: PB - U.S. Dept. of the Interior, U.S. Geological Survey, PP - [Reston, Va.] : PY - 1995. N1 - Shipping list no.: 97-0317-M. ID - 219975 KW - Water KW - Nitrogen TI - Nitrogen isotopes in nitrate from surface water and shallow groundwater at Sixmile Creek, southeastern Colorado ER -