Operational research /
Cohen, S S .
Operational research / Textual Documents S S Cohen. - 1 / . - London : Edward Arnold Publications Ltd. - 245 ; .
658.4034 / COHEN/OP
Operational research / Textual Documents S S Cohen. - 1 / . - London : Edward Arnold Publications Ltd. - 245 ; .
658.4034 / COHEN/OP
