Mastering Essential Math Skills Fractions: 20 Minutes a Day to Success
by Richard W. Fisher
ISBN 13: 9780966621150
Format: Paperback (80 pages) Publisher: Math Essentials Published: 30 Jul 2008
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Basic Math Concepts for Water and Wastewater Plant Operators (Mathematics for water & wastewater treatment plant operators series)
by Joanne K. Price
ISBN 13: 9780877628088
Format: Hardcover (368 pages) Publisher: CRC Press Published: 01 Jul 1991