text Mongra, J.R. creator Bajaj, Shweta Puri, N.K. Tyagi, Y.P. text Noida J.R. Mongra 2017 17th rev. ed monographic various pagings 23cm (pbk) by J.R. Mongra [and] Shweta Bajaj; edted by N.K. Puri [and] Y.P. Tyagi 657.48 B-682377 DPL Pansy