000 00282nam a22001217a 4500
082 _a
_b
100 _aNilratan Sen
245 _aCaryagitikosa/
_cby Nilratan Sen
260 _aSimla:
_bIndian Institute of Advanced Study,
_c1977.
300 _a160p.
650 _a
942 _cBK
999 _c175965
_d175965