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Biblio
Found 3 results
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Keyword
is
water pollution control
and
Author
is
Helmer, R.
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1999
I. Hespanhol
and
Helmer, R.
,
“
Control de la contaminacion del agua : guia para la aplicacion de principios relacionados con la calidad del agua
”
. CEPIS (Centro Panamericano de Ingenieria Sanitaria y Ciencias del Ambiente), Lima, Peru, p. xvi, 546 p. : fig., tab., 1999.
1997
I. Hespanhol
and
Helmer, R.
,
Water pollution control : a guide to the use of water quality management principles
. London, UK: E & FN Spon, 1997, p. xvi, 510 p. : boxes, fig., maps, tab.
1996
R. Helmer
,
“
Water pollution control
”
, in
[Third Global Forum : Barbados : 30 October - 3 November 1995 : various papers presented]
, 1996, p. 31 p.
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