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100 _aSoumelis, Constantin G.
_d_
245 _aProject evaluation methodologies and techniques
260 _aParis
_bUNESCO
_c1977
300 _a138 p.
_c22 cm.
_bPB
964 _b
_c
_d
_e
_f
_g_
997 _a37686 LIBSS C
999 _c33995
_d33995