TY  - BOOK
AU  - Klahr,Philip
ED  - Research and Development Corporation, 
TI  - Partial proofs and partial answers
T2  - The Rand paper series
PY  - 1978///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Artificial intelligence.
N1  - Includes bibliographical references (pages 18-19)
ER  -