Physiological changes in plasma proteins characteristic of human reproduction; cross-sectional and longitudinal electrophoretic data for women during and following uncomplicated and complicated pregnancies,

Includes bibliographies.

The new college course map and transcript files : changes in course-taking and achievement, 1972-1993 ; based on the postsecondary records from two national longitudinal studies /

Includes bibliographical references (p. 282-284)

Changes in basis for allowance under the disability insurance benefit program, 1968-76 /

"March 1978."