Yorkmark, Beatrice A data management system evaluation for the health insurance study / Beatrice Yorkmark and Davis H. Stewart - California : Rand Corporation, 1973 - iii, 57 pages ; 28 cm. - The Rand paper series ; P-5181 . - Rand paper series ; P-5181 . Bibliography: p. 57. ISBN: Hadiah Subjects--Topical Terms: Data ManagementRatingsInformation Science