TY  - BOOK
AU  - Haggstrom,Gus W.
ED  - Research and Development Corporation, 
TI  - A comparison of alternative methods for estimating treatment effects
T2  - The Rand paper series
PY  - 1973///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Experimental design
KW  - Estimation theory
N1  - Includes bibliographical references
ER  -