TY - BOOK AU - Spellman,Frank R. TI - Stream ecology and self-purification : an introduction for wastewater and water specialists SN - 1566763770 AV - TD764 .S64 1996 U1 - 577.64 SPE PY - 1996/// CY - Lancaster, Pa. PB - Technomic Pub. KW - Stream self-purification KW - Stream ecology KW - ME, IME N1 - Includes bibliographical references (p. 127-129) and index UR - http://www.loc.gov/catdir/enhancements/fy0646/95062015-d.html ER -