00494 a2200193 4500 519.52 SAM 31810 56354 Parel, C.P. Sampling design and procedures Singapore : International development research 1973 1972 53p. 22cm. Statistical methods Ferrer, P.L. De Guzman, G.G. Tan, R.H. Sinsioco, C.S. Caldito, G.C. L 58313 58313 0 0 0 0 LEN MAIN MAIN LEN 2016-02-17 0 519.52SAM 9871 2017-09-04 00:00:00 0.00 2016-10-31 L 0 0 0 0 LEN MAIN MAIN LEN 2016-02-17 1 519.52SAM 9872 2021-02-02 00:00:00 2020-07-22 0.00 2016-10-31 L