00605nam a22002171 4500 sa 68005362 DLC 20260227112508.0 710915s1967 ce a b 00010 eng sa 68005362 PL480:C-243 TS156.Q3 D4 658.5/62 De Silva, M. G. Some aspects of quality control in industry, by M. G. De Silva. Colombo, Printed by Ranjana Printers, 1967. 66 p. illus. (part fold.) 17 cm. Rs5 Bibliography: p. 66. Quality control. 80691 80691