TY - BOOK AU - Chipty,Tasneem AU - Witte,Ann Dryden TI - Effects of information provision in a vertically differentiated market AV - HF5415 C446E PY - 1998/// CY - Cambridge, Mass PB - National Bureau of Economic Research KW - CHILD CARE SERVICES KW - UNITED STATES KW - ECONOMETRIC MODELS KW - ECONOMICS KW - RESEARCH ER -