publisher: Osborne Publishing publish date: April 1st 1981
format: paperback pages: 385
language: English
ISBN:
0931988462 (9780931988462)
publisher: Osborne Publishing publish date: April 1st 1984
format: paperback pages: 482
language: English
ISBN:
0881341045 (9780881341041)
language: English
ISBN:
0881341568 (9780881341560)