TY  - BOOK
AU  - Clark , Peter 
AU  - Landfield , Judy 
TI  - Natural energy workbook
U1  - 333.79 21st ed.
PY  - 1976///
CY  - California
PB  - Visual Purple
KW  - Energy conservation
KW  - Power resources
N1  - Index: pp 127-28
ER  -