TY  - BOOK
AU  - Enrick,Norbert Lloyd
TI  - Effective graphic communication
SN  - 0877690979
AV  - QA90 .E59
U1  - 001.55 
PY  - 1972///]
CY  - Princeton, N.J.
PB  - Auerbach
KW  - Graphic methods
KW  - Local
N1  - 920519; Bibliography: p. 180-182
ER  -