00507nam a22001817a 4500 dpl 20180716113054.0 180716b xxu||||| |||| 00| 0 eng d 150.50 B-083252 DPL EN 0 371.3 Mangal,S.K. Education Technology by S.K.Mangal Ludhiana Tandon Publications 2002 304p; includes References and Bibliography 20cm ddc EN 371.3 MAN 154080 154080 0 0 ddc 0 0 NFIC BL1 BL1 2018-07-16 BPPD/PUB 150.50 0 371.3 MAN B-083252 2018-07-16 00:00:00 150.50 2018-07-16 EN