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Sorensen และผู้แต่งคนอื่นๆ. (1995) A study of breast-feeding practices among women working on the plantations in Srilanka . Mahidol University/Bangkok.
Sorensen และผู้แต่งคนอื่นๆ. A study of breast-feeding practices among women working on the plantations in Srilanka. . Bangkok:Mahidol University, 1995.
Sorensen และผู้แต่งคนอื่นๆ. (1995) A study of breast-feeding practices among women working on the plantations in Srilanka . Mahidol University/Bangkok.