Venkatachary, P. creator Reddy, K. Srinivas Lecturer Sridevi, K. Lecturer text New Delhi Neelkamal Publications 2018 monographic 190p. 24(pb) by P. Venkatachary, K. Srinivas Readdy [and] K. Sridevi 372.21 9789386725608 ENG-140027 DBAD 20240403115433.0