00553nam a22001817a 4500001001400000003000900014005001700023008004100040020001500081040001300096082002200109100003200131245007800163260004000241300003400281504003600315650002000351BD-DhSAU 7811BD-DhSAU20150528154503.0150528b1998    bg a|||| |||| 001 0 eng d  a9840514229  aBD-DhSAU  222a307.1407bSUM  aSufian, Abu Jafar Mohammad   aMethods and techniques of social research /cby Abu Jafar Mohammad Sufian  aDhaka :bUniversity press ,cc1998.  axvii, 350 p.:bill. ;c25 cm.  aIncludes bibliography and index  asocial research