By Sperry James M.   Peirce J. Jeffrey   in Water Environment Research

ISSN:1554-7531|71|3|316-322

Water Environment Federation‎(1999)‎

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By Sperry James M.   Luiselli James K.   Goldman Sarah R.   Abbe Karen J.   Hauser Mark J.   in Journal of Developmental and Physical Disabilities

ISSN:1056-263X|16|3|287-296

Springer Publishing Company ‎(2004)‎

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