Ng, W. S. (2010). Mechanism of micro hydro electric system [electronic resource].
Chicago-čujuhus (17. p.)Ng, Wee Sern. Mechanism of Micro Hydro Electric System [electronic Resource]. 2010.
MLA-čujuhus (9. p.)Ng, Wee Sern. Mechanism of Micro Hydro Electric System [electronic Resource]. 2010.
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