publisher: Heinemann Educational Publishers publish date: November 8th 1971
format: hardcover pages: 78
ISBN:
0435597523 (9780435597528)
publisher: Univ of Michigan Inst of publish date: July 1st 1973
format: hardcover pages: 229
ISBN:
0877363196 (9780877363194)
publisher: Heinemann Educational Publishers publish date: February 18th 1974
format: hardcover pages: 62
ISBN:
0435597604 (9780435597603)