Acid Rain

Acid Rain Measurement Guide (Chinese only) (contributed by Mr. Cheng Tak Chi of PLK Wu Chung College) <ref>Insert footnote text here</ref> Reference: Lam, C.Y., Kyle, W.J., Chan, Y.K., Lam, K.S., Lam, David H.Y., Lee, Olivia, Lau, Alexis K.H. & Fong, Clarence, Hong Kong Secondary Schools Acid Rain Survey , HKMetS Bulletin , Volume 13, Numbers 1/2, 2003, p. 3 - 11

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