00351 a2200133 4500 77065 658.4034 WHI 39279 39279 Douglas White Operational Research Technique : An Introduction Douglas White London Business Books Limited 1969 vii 207 p Vol-1 caenust 658.4034 WHI 312138 312138 0 0 0 0 NFIC CAE CAE 2017-04-03 0 658.4034 WHI CAEG-4009 2017-04-05 2017-04-05 BK