by Yorkston, David Beukelman, Edythe Strand, Kathleen Bell
publisher: Pro-Ed
publish date: January 1st 1999
format: hardcover pages: 618
language: English
ISBN:
0890797846 (9780890797846)
publisher: Pro ed publish date: January 15th 2010
format: paperback pages: 576
language: English
ISBN:
1416404341 (9781416404347)