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      <marc:subfield code="a">Demayo, Adrian, </marc:subfield>
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      <marc:subfield code="a">Computer programs in use in the Water Quality Division. </marc:subfield>
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      <marc:subfield code="c">A. Demayo.</marc:subfield>
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      <marc:subfield code="a">Computer programs in use in the Water Quality Division. </marc:subfield>
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      <marc:subfield code="a">Ottawa, Canada : </marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Environment and Climate Change Canada].</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"This is the first in a series of reports presenting computer programs in use in Water Quality Division. The present volume contains several "Least square fit" programs, and a program for finding the real or imaginary roots of a polynomial equation. These programs can he also used as subroutines in other programs. All the programs presented in this report were written in FOCAL-69 and are used on a PDP-8/L - 8K computer"--Preface, page v.</marc:subfield>
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