Present value
Subtitle: constructing a sustainable future
By: Gigi Coe, Office of Appropriate Technology, State of California.
Contributors: Coe, Gigi.
Publisher: Friends of the Earth
Published: 1979
Place of publication: San Francisco
Language: eng
Number of pages: 81
Subjects: Energy conservation -- California.; Solar energy -- California.
Notes: Bibliography: p. 79-81.