TY - RPRT TI - An empirical comparison of formulas evaluating early intervention program impact on development. AU - S A Rosenberg AU - C C Robinson AU - D Finkler AU - J S Rose PY - 1987 DO - 10.1177/001440298705400303 UR - https://pubmed.ncbi.nlm.nih.gov/2960535/ ID - 2960535 ER -