Primary social support on later life
Subtitle: physical health as cause and consequence of informal services and geographic distance
By: Merril D. Silverstein
Published: 1991
Language: eng
Number of pages: 237
Notes: "91-18,650."

Thesis (Ph. D.)--Columbia University, 1990.

Includes bibliographical references (leaves 220-235).

Microfilm. Ann Arbor, Mich. : University Microfilms International, 1991. 1 microfilm reel ; 35 mm.