TY  - BOOK
AU  - Keil,Frank C.
TI  - Semantic and conceptual development: an ontological perspective 
T2  - Cognictive science series (Harvard University Press, London)
SN  - 0-674-80100-8
U1  - 155.413 21E
PY  - 1979///
CY  - London
PB  - Harvard University Press
N1  - Bibliogr. p. 201-209
ER  -