00310nam a2200109Ia 4500008004100000020001500041040002900056050002200085100002400107245004000131260002900171230104s9999||||xx |||||||||||||| ||und||  a9966846484  cChuka University Library  aQA 276.6bN3 2000  aNassiuma, Dankit K. 0aSurvey sampling :theory and methods  aSUNLITHObNAIROBI c2000