TY  - BOOK
T1  - Graphs :the picturing of information /
DA  - 1973.
CY  - [Bloomington] :
AU  - LeBlanc, John F.
ET  - rev. ed.
CN  - QA90
CN  - QA90
PB  - Indiana University Mathematics Education Development Center,
PP  - [Bloomington] :
PY  - 1973.
ID  - 11060
KW  - Graphic methods.
TI  - Graphs :the picturing of information /
ER  -