00728cam a2200253 4500 3133059 OSt 20220228151114.0 740122s1973 enka b 000 0 eng 72012266 GB*** 0122056604 DLC HU DLC TH7683.A3 D38 697.9/324 Davies, C. N. (Charles Norman), 1910- 31860 Air filtration [by] C. N. Davies. London, New York, Academic Press, 1973. x, 171 p. illus. 24 cm. Includes bibliographical references. Air filters. 31861 7 cbc orignew 2 ocip 19 y-gencatlg ddc BOOKS 0 31914 31914 0 0 ddc 0 0 REF 004 004 GEN 2022-02-28 0 697.93 DAV 1973 WGCFNRL00012138 2022-02-28 00:00:00 1 2022-02-28 BOOKS