Collier's Encyclopedia: With Bibliography and Index, Volume 3

accidents agricultural aircraft airplane altitude American ancient Asia Asia Minor Asian astronomical Athens atmosphere atomic atomic weight Australia Austria aviation Azerbaijan Bach became British capital Caspian Sea celestial CELESTIAL SPHERE cent central century B.C. China Chinese coast culture earth east eastern economic electrical electrons Empire engine established Europe forces German Greek Gulf Hapsburg Hungary important India industry island known lake land later light lines machine magnetic Magyar major manufacturing ment miles military modern Mongol mountains nomadic northern orbit organization particles period plane plants plateau political population port production province Queensland racing range region river Roman solar South Wales southeast Southeast Asia southern southwest Soviet Union species stars Syria telescope temperature theory tion town trade United Vienna western World War II