000
00279nam a2200109Ia 4500
001
104750
008
170722s9999 xx 000 0 und d
100
_a
Durbin, Efm
245
_a
Problems of economic planning
_b
Papers on planning and economics /
260
_c
1960.
942
_c
GEN
999
_c
41077
_d
41077