00874cam a22002651 4500 6105291 BD-DhUL 20140910084549.0 720712s1962 enka 000 0 eng 63024908 (OCoLC)353108 DLC OClU CaSRU DLC BD-DhUL premarc HD20 .G64 519.9 HOS Great Britain. National Coal Board. Some techniques of operational research / Prepared by the operational research group of the National Coal Board. Edited by B. T. Houlden. London : English Universities Press c1962. x,153 p. : ill. ; 23cm. Includes bibliographies. Operations research Houlden, Brian Thomas, ed. 7 cbc oclcrpl u ncip 19 y-gencatlg ddc BK 9338 9338 0 0 ddc 0 519_900000000000000_HOS 0 NFIC 16516 DUSL DUSL GEN 2014-09-10 519.9 HOS A23534 2014-09-10 2014-09-10 BK