TY  - BOOK
ED  - United States.
TI  - SCS national engineering handbook, section 4, hydrology
U1  - 551.48 
PY  - 1972///-.
CY  - Washington: 
PB  - Govt. Print. Off., 
KW  - Hydrology
N1  - Cover title; Loose-leaf; "This handbook was first issued in November 1954, titled Hydrology guide for use in watershed planning."; Includes bibliographical references
ER  -