Published 1976
by Office of International Programs, University City Science Center in Philadelphia, Pa .
Written in English
Edition Notes
Contributions | University City Science Center., United Nations. |
Classifications | |
---|---|
LC Classifications | HT391 .F675 1976 |
The Physical Object | |
Pagination | 1 v. (various pagings). |
ID Numbers | |
Open Library | OL17326392M |