TY  - BOOK
AU  - Wansing, H
TI  - Displaying modal logic
SN  - 9780792352051
SN  - 98028934
U1  - 160 WAN 
PY  - 1998///
CY  - Deventer, The Netherlands ; Boston, MA
PB  - Kluwer Academic
KW  - Modality (Logic)
N1  - Includes bibliographical references (p. 235-246) and index
ER  -