TY  - BOOK
AU  - Gilbert G. Weaver
AU  -  Elroy  W. Bollinger, 
TI  - Visual aids : Their construction and use
U1  - 371.33 
PY  - 1963///
CY  - Princeton
PB  - D. Van Nostrand Co Inc
N1  - Gilbert G. Weaver & Elroy  W. Bollinger: Visual aids : Their construction and use.  Princeton.  D. Van Nostrand Co Inc, 1963.--(371.33WEA)
ER  -