00501nam a2200157Ia 4500008004100000040001700041082002200058100001600080110004100096245009000137260003100227300000900258440003500267650002600302700001500328190327s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta311.2bI39N  aMurthy, M N  aIndia. National Sample Survey Office 0aNSSbon the concepts of best and aimissible estimators in sampling theorycM N Murthy  aCalcuttabThe Authorc1968  a19p.  aTechnical paper series; no. 20  aSampling (Statistics)  aSingh, M P