The Nation's Schools, Količina 81Michael Vincent O'Shea McGraw Hill, 1968 |
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Zadetki 1–3 od 65
Stran 84
... projector Several innovations mark this new Bell & Howell entry into the field of overhead projectors . One is the ma- chine's automatic lamp change sys- tem — should the lamp burn out during a presentation , a twist of a knob positions ...
... projector Several innovations mark this new Bell & Howell entry into the field of overhead projectors . One is the ma- chine's automatic lamp change sys- tem — should the lamp burn out during a presentation , a twist of a knob positions ...
Stran 125
... projectors have to use a plastic fresnel condenser which " spills " the light into the teacher's eyes . ) The Transpaque is the only projector to assure total eye safety and comfort even after many hours of projection . The Transpaque ...
... projectors have to use a plastic fresnel condenser which " spills " the light into the teacher's eyes . ) The Transpaque is the only projector to assure total eye safety and comfort even after many hours of projection . The Transpaque ...
Stran 4
... projector in the world ! VIEWLEX V - 25 35mm FILMSTRIP & 2 " x2 " SLIDE PROJECTOR This is only one of a complete line of Viewlex " Guaranteed for a Lifetime " projectors designed to fit every need , meet every budget . * Names and ...
... projector in the world ! VIEWLEX V - 25 35mm FILMSTRIP & 2 " x2 " SLIDE PROJECTOR This is only one of a complete line of Viewlex " Guaranteed for a Lifetime " projectors designed to fit every need , meet every budget . * Names and ...
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55 Public Square AASA American Architects audio automatic Bell & Howell building Calif carpet catalog cent Chicago City classroom color Company complete CORONET FILMS Corp cost court curriculum Dept desegregation developed Division door educa electronic equipment evaluation facilities facts circle federal film filmstrips floor footcandles furniture grade Graflex high school installation instruction laboratory learning LEXAN maintenance materials McGraw-Hill ment Merchandise Mart NATION'S SCHOOLS National Negro Norelco Office operation planetarium Plexiglas problems projector public school pupils Raytheon reading records reply card school administrators school board school district school system Scott Roll Seating space staff steel superintendent tape teachers teaching Technicolor tion Title units Washington D.C. Wollensak write York