Description
Item Description:"October 1965."
"This study was supported in part by U.S. Public Health Service Contract no. PH 86-63-129 and in part by USPHS grant CH 00075 from the Division of Community Health Services to the American Publich Health Association for a series of mongraphs on vital and health statistics"--Page 1.
Physical Description:1 online resource (3 unnumbered pages, 87 pages) : illustrations.
Bibliography:Includes bibliographical references.