TY - RPRT TI - Effectiveness evaluation of STOL transport operations (phase 2) AU - Welp, D. W. AU - Brown, R. A. AU - Ullman, D. G. AU - Kuhner, M. B. PY - 1974 UR - https://ntrs.nasa.gov/citations/19740013547 ID - 19740013547 ER -