Solar water heating.
Publisher: Synergism, inc.
Published: 1978
Place of publication: Locust Grove, Va
Language: eng
Subjects: Solar water heaters -- Patents.; Patents -- United States.
Other titles: Pat-ab.
Notes: At head of title: Pat-ab, U.S. patent abstracts.
Table of contents: value: v. 1. 1870-1963.; value: v. 2. 1964-1977.