00250nam a2200109Ia 4500008004100000100001600041245002300057260002200080260000900102546001200111999001700123170619s9999    xx            000 0 und d  aSharma- S D 0aOPERATION RESEARCH  bMEERUT; KEDARNATH  c2005  aENGLISH  c18518d18518