00972cam a2200265 4500 gs 68000270 DLC 20260227111423.0 690815s1968 dcua b 000 0 eng c gs 68000270 U.S. Geological Survey Library DLC DLC n-us-pa n-us-de QE75 .C5 no. 554 GB1225.P4 L46 Copy 2. 551.4/83/0974813 Leopold, Luna B. (Luna Bergere), 1915-2006. Hydrology for urban land planning; a guidebook on the hydrologic effects of urban land use, by Luna B. Leopold. Washington, 1968. iii, 18 p. illus. 26 cm. United States. Geological Survey. Circular 554 Bibliography: p. 18. Hydrology Brandywine Creek Watershed (Pa. and Del.) Regional planning Brandywine Creek Watershed (Pa. and Del.) Geological Survey circular ; 554. 30491 30491