na INLIS000000000009925 Ind 0010-1118009925 Vegetation and watershed management COLMAN, E.A. E.A. Colman New York The Ronald Press 412 p.: ill.; 23 cm. 412 p.: ill.; 23 cm. 581.19COLv Bibl.: p. 373-392 Index : p. 393-412 581.19 VEGETATION WATERSHEDS 65/73