Visual presentation handbook for business and industry. /
De Jen, Jean.
Visual presentation handbook for business and industry. / Jean De Jen - St. Petersburg, Fla. : Oravisual Co., 1959. - 105 p. : illus. ; 24 cm.
Index present.
Oratory--Audio-visual aids.
Presentation.
658.45 / JEV 1959
Visual presentation handbook for business and industry. / Jean De Jen - St. Petersburg, Fla. : Oravisual Co., 1959. - 105 p. : illus. ; 24 cm.
Index present.
Oratory--Audio-visual aids.
Presentation.
658.45 / JEV 1959