for the Student of UPSC (engg, Diploma, SSC-JE and other Competitive Courses Mehta, V.K. creator Mehta, Rohit Author text New Delhi S Chand and Company Limited 2022 monographic 1051p. 27cm(pbk) By V.K. Mehta and Rohit Mehta 621.3 9789355014467 9789355014467 B-746607-611 E.N.A./7.11.22 ENG-143639 Aakar DBAD 20250128160855.0