TY - BOOK AU - Bardach,John E. TI - Downstream: a natural history of the river AV - QH97 .B37 U1 - 574.929 PY - 1964///] CY - New York PB - Harper & Row KW - Freshwater biology KW - Local KW - Natural history KW - Rivers N1 - Bibliography: p. 259-265 ER -