00559nam a2200181   450000500170000001000150001702000270003203500140005903700130007308200080008610000220009424500490011625000060016526000520017127000780022330000200030150000560032120240124112112.0  aENG-138989  a9789355322661c1320.00  aEN-122521  bDBAD/PUB  a500  aAgrahari, Ravi P.  aScience and Technology/cBy Ravi P. Agrahari  a1  aTamil NadubMcgraw Hill Education Pvt Ltdc2022  aAnjana Complex No: 5/90 A, Butt Road, St Thomas MountbTamil Nadue600016  avpp.c24cm(pbk)  aFor Civil Services Preliminary and Main Examination