TY  - BOOK
AU  - Heath,Ralph C.
ED  - United States
TI  - Ground-water regions of the United States
U1  - 553.790973 19th ed.
PY  - 1984///].
CY  - [Washington]: 
PB  - [United States Government Printing Office], 
KW  - Groundwater
KW  - United States
N1  - Includes bibliographical references (p. 73-75)
ER  -