Elements of formal logic
Hughes, G E
Elements of formal logic - Bombay: B. I. Publications, 1965 - xii, 392p.
Axiomatic systems
168.51 / K5-;1
Elements of formal logic - Bombay: B. I. Publications, 1965 - xii, 392p.
Axiomatic systems
168.51 / K5-;1