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" "
Checland P B
:
Checland P B
:
2
:
9741
:
0
:
0
:
Checland P.B., Scholes I. Soft systems methodology in action. Chichester: Wiley, 1990.
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Checland P.B., Scholes I. Soft systems methodology in action. Chichester: Wiley, 1990.
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