TY  - DATA
AU  - Heather D. Pfeiffer, Timothy E. Nagle
TI  - Conceptual Structures: Theory and Implementation
SN  - 9783540481898
PY  - 1993///
PB  - Springer Berlin Heidelberg
KW  - Computer Science
UR  - https://doi.org/10.1007/3-540-57454-9
ER  -