TY  - BOOK
AU  - Gregor, Mac A J
TI  - Graphics Simplified: How to Plan and Prepare Effective Charts, Graphs, Illustrations, and Other ..
SN  - 0802063632
U1  - 741.6 
PY  - 1979///
CY  - London
PB  -  University of Toranto Press
KW  - Mathematics
ER  -