1
Graphics for learning : proven guidelines for planning, designing, and evaluating visuals in training materials [E-Book] /
2
Handbook of optics 3 : Vision and vision optics /
Book
Subject (ZB): ...visual aid...
Table of Contents 
3
IBM Tivoli Storage Manager version 5.3 : technical workshop presentation guide [E-Book] /
Subject (ZB): ...Electronic data processing Backup processing alternatives Study and teaching Audio-visual aids....

Full text 
4
English in the digital age : information and communications technology (ICT) and the teaching of English [E-Book] /
5
Visual optics and instrumentation
Book
Subject (ZB): ...visual aid...
6
Hochauflösende Umsetzung von Bildern in eine taktile Darstellung für Blinde.
Book
Subject (ZB): ...visual aid...