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1
How to solve problems; elements of a theory of problems and problem solving
Published 1974Subjects: Full Text (via Internet Archive)
eBook -
2
Thinking, problem solving, cognition /
Published 1983Subjects: Full Text (via Internet Archive)
eBook -
3
How to solve problems : elements of a theory of problems and problem solving /
Published 1974Subjects:Book -
4
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5