publisher: Harmony Books
publish date: January 1st 1977
format: hardcover pages: 32
language: English
ISBN:
0517528517 (9780517528518)
publisher: Sybex Inc.,U.S.
publish date: June 1st 1984
format: paperback pages: 182
ISBN:
0895881721 (9780895881724)
publisher: Longman Higher Education publish date: June 1st 1984
format: paperback pages: 96
ISBN:
089588173X (9780895881731)