Pocket Ref 4th edition. The concise all-purpose pocket-sized reference book featuring abundant information on many subjects, hundreds of tables, maps, formulas, constants and conversions. If you need to know it, it is in this book!
Pocket Ref 4th edition. The concise all-purpose pocket-sized reference book featuring abundant information on many subjects, hundreds of tables, maps, formulas, constants and conversions. If you need to know it, it is in thi...
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