Survey on water quality instrumentation : survey report 192 / Richard K. Miller, Marcia E. Rupnow. — Lilburn (Georgia) : Future technology surveys, [1992]. — CIDIMA. — 52 p. : gráf. ; 28 cm. — ISBN 1-55865-216-7 1. Calidad del agua. I. Rupnow, Marcia E.. 504.4.064