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Keywords: Mono-bi-poly trend of evolution of technical systems.svg en Altshuller G S TO FIND AN IDEA INTRODUCTION TO THE THEORY OF INVENTIVE PROBLEM SOLVING Novosibirsk Nauka 2nd ed -1991 ISBN 5-02-029265-6 in Russian p p 94-95 2011-10-17 Altshuller G S TO FIND AN IDEA Novosibirsk Nauka 2nd ed -1991 ISBN 5-02-029265-6 in Russian Altshuller G S PD-Art SVG diagrams in English |