By Siyambalapitiya S. B.   in Innovations in Education & Teaching International

ISSN:1470-3300|38|3|257-264

Routledge Ltd‎(2031)‎

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By Dharmapriya U.S.S.   Siyambalapitiya S.B.   Kulatunga A.K.   in International Journal of Industrial and Systems Engineering

ISSN:1748-5037|11|1-2|110-121

Inderscience Publishers‎(2012)‎

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