Lury, D. A. Elementary quantitative methods / [by] D.A. Lury. - [Nairobi] : East African Pub. House, [1967] - EAPH economic textbooks ; 2 . Includes bibliographical references. LCCN: 73013130 Subjects--Topical Terms: Business mathematics. LC Class. No.: HF5691 / .L83 Dewey Class. No.: 511/.8