Research methodology
Subtitle: strengthening causal interpretations of nonexperimental data : conference proceedings
By: edited by Lee Sechrest, Edward Perrin, John Bunker.
Series: DHHS Publication -- no. (PHS) 90-3454
Publisher: Dept. of Health & Human Service, Public Health Service, Agency for Health Care Policy and Research
Published: 1990
Place of publication: Rockville, MD (Parklawn Building, Room 18-12, Rockville 20857)
Language: eng
Number of pages: 230
Notes: PRIORITY 3.