Fernando, D.N.Soysa, P.E.Abewickrame, K.2010-07-062010-07-061987Journal of the National Science Council of Sri Lanka, 15(2):p.133-144https://dl.nsf.gov.lk/handle/1/6555FeedingBreast feedingFamily planningMedical SciencesLactational amenorrhoea and contraceptive practiceArticle