TY - BOOK AU - Johnson,E.R. AU - Williams,Ted TI - American Military Helicopters and Vertical / Short Landing and Takeoff Aircraft Since 1941 SN - 9781476677347 AV - UG1233 .J64 2021 U1 - 623.74/6047 23 PY - 2021/// CY - Jefferson, North Carolina {US} PB - McFarland & Company, Inc. KW - Military helicopters KW - United States KW - History KW - Short take-off and landing aircraft KW - Aeronautics, Military KW - HISTORY / Military / Aviation KW - bisacsh N1 - Includes bibliographical references (pages 477-479) and index ER -