publisher: Penn State University Press publish date: January 1st 1962
format: hardcover pages: 224
ISBN:
0271730617 (9780271730615)
ISBN:
0877230358 (9780877230359)
publisher: Thomas Y. Crowell Company publish date: 1954
format: paperback pages: 500
language: English
publisher: The Macmillan company publish date: 1970
format: hardcover pages: 568
language: English