2008 Harcourt California Science Grade 6 -- Teacher Edition (CA)(TE)(Spiral) by Michael J. Bell, Michael A. DiSpezio, Marjorie Frank, Gerald H. Krockover, Joyce C. McLeod, Barbara Ten Brink, Carol J. Valenta, & Barry A. Van Deman ***ISBN-13: 9780153491085 ***Condition: Good Used--quality @sci17.3>harcourt.sci