TY - BOOK AU - United States. National Park Service. Division of Audiovisual Arts AU - United States. National Park Service AU - National Audiovisual Center TI - Springfield Armory PB - The Service : Distributed by National Audiovisual Center PY - 1990 EP - 1 videocassette (18 min.) UR - https://ci.nii.ac.jp/ncid/BA29498348 ER -