TY - BOOK T1 - Report on the U.S. Geological Survey's evaluation program for standard reference samples distributed in April 1994T-129 (trace constituents), M-130 (major constituents), N-42 (nutrients), P-22 (low ionic strength), and Hg-18 (mercury) / DA - 1994. CY - Golden, Colo. : AU - Long, H. Keith. AU - Farrar, Jerry W. VL - 94-369 CN - I 19.76: PB - U.S. Geological Survey, PP - Golden, Colo. : PY - 1994. N1 - Chiefly tables. ID - 219592 KW - Sediments (Geology) KW - Rocks KW - Water KW - Chemical laboratories TI - Report on the U.S. Geological Survey's evaluation program for standard reference samples distributed in April 1994T-129 (trace constituents), M-130 (major constituents), N-42 (nutrients), P-22 (low ionic strength), and Hg-18 (mercury) / ER -