00487nam 2200169z- 450 9910693758403321(CKB)4970000000042490(EXLCZ)99497000000004249020240129c2003uuuu -u- -engNASA : major management challenges and program risksWashington, D.CNasaDOCUMENT9910693758403321NASA : major management challenges and program risks3874079UNINA