TY  - BOOK
AU  - Howson,Colin
ED  - ebrary, Inc.
TI  - Logic with trees: an introduction to symbolic logic 
AV  - BC135 .H68 1997eb
U1  - 160 20
PY  - 1997///
CY  - London, New York
PB  - Routledge
KW  - Logic, Symbolic and mathematical
KW  - Electronic books
KW  - local
N1  - Includes bibliographical references (p. [189]-190) and indexes; Electronic reproduction; Palo Alto, Calif.; ebrary; 2005; Available via World Wide Web; Access may be limited to ebrary affiliated libraries
UR  - http://ezproxy.taylors.edu.my/login?url=http://site.ebrary.com/lib/taylorscollege/Doc?id=10017151
ER  -