TY  - BOOK
AU  - Keedy, Mervin L.
AU  - Bittinger, Marvin L.
AU  - Smith, Stanley A.
AU  - Nelson, Charles W.
TI  - Informal geometry
SN  - 0201204495
U1  - FOR 516 In3 1986 
PY  - 1986///
CY  - Menlo Park, California
PB  - Addison-Wesley Publishing Company
KW  - Geometry.
ER  -