00332    a2200109   4500082001500000100002400015245004300039260009100082300002200173650001300195650001400208  a001.4bHAN  aThattil, R. O eed.  aHandbook on survey design and analysis  aPeradeniyabPostgraduate Institute of Agriculture University of Peradeniyac1999g1999  a[iii],146p.c25cm  aResearch  aKnowledge