You're using an ancient browser to surf the modern web. Please update to the latest version (and don't use Internet Explorer!).
Leonardi.DB
a logical geometry project
Ivan Boh (°1930, †2009)
Ivan Boh authored the following 1 source, containing a total of 2 diagrams.
Boh, Ivan. 1977. “The ‘Conditionatim’-Clause: One of the Problems of Existential Import in the History of Logic.” Notre Dame Journal of Formal Logic 18 (3): 459–466. (2 diagrams)