Lankatilake KN, Seneviratne S.R.De A. Rajapakse L.C, Fernando D.N
Publication year: 1997

Lankatilake KN, Seneviratne S.R.De A. Rajapakse L.C, Fernando D.N. Basic statistics – a self learning module  vol-I . Department of Community Medicine. Faculty of Medicine, Colombo, 1997. ISBN 955-9021-08-7.

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