TY  - BOOK
AU  - Ulmer,Gregory L.
TI  - Heuretics: the logic of invention 
SN  - 0801847176 
AV  - BH301.C84 U5 1994
PY  - 1994///
CY  - Baltimore 
PB  - John Hopkins University Press
N1  - Includes bibliographical references and index
ER  -