1.
40 Principles: TRIZ Keys to Technical Innovation (Triztools, V. 1)
by Genrich Altshuller, Lev Shu...
ISBN: 9780964074033
List Price: $40.00
OUT OF STOCK
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And Suddenly the Inventor Appeared/the Art of Inventing
by Altov, Henry, Shulyak, Lev
ISBN: 9780964074019
List Price: $40.00