TY  - BOOK
AU  - Lefferts,Robert
TI  - Elements of graphics: how to prepare charts and graphs for effective reports 
SN  - 0060125780
AV  - QA90QA90 .L413 1981.L413
U1  - 001.4/226 19
PY  - 1981///
CY  - New York, London
PB  - Harper & Row
KW  - Graphic methods
N1  - Includes index
ER  -