TY - BOOK AU - Gaspar, Emilian. TI - Modern trends in tracer hydrology SN - 0849343194 (set) U1 - 551.48028 19 PY - 1987/// CY - Boca Raton, Fla. PB - CRC Press KW - Radioisotopes in hydrology KW - Radioactive tracers in hydrogeology N1 - Includes bibliographies and indexes; v. 1.-- v. 2.-- ER -