40 principles : TRIZ keys to innovation
- by Genrich Altshuller ; new edition with commentary by Dana W. Clarke, Sr. ; with additional material by Lev Shulyak and Leonid Lerner ; drawings by Uri Fedoseev ; translated and edited by Lev Shulyak and Steven Rodman.
- Extended ed.
- Worcester, MA : Technical Innovation Center, 2005.
- Physical description
- 137 p. : ill. ; 28 cm.
- TrizTools ; v. 1.
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