المؤلفون: Heatherington, A.C., Fisher, H.L., Sumler, M.R., Waller, C.L., Shah, P.V., Hall, L.L.

المصدر: Environmental Research ; volume 79, issue 2, page 138-155 ; ISSN 0013-9351

الاتاحة: http://dx.doi.org/10.1006/enrs.1998.3862
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