00529nam 2200169z- 450 9910693647503321(CKB)4970000000018630(EXLCZ)99497000000001863020240129c2002uuuu -u- -engChild care : states have undertaken a variety of quality improvement initiatives, but more evaluations of effectiveness are neededWashington, D.CChild CareDOCUMENT9910693647503321Child care3428033UNINA