Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Richard Montague, Donald Kalish. Remarks on descriptions and natural deduction. Arch. Math. Log., 3(3-4):65-73, 1957. [doi]
Abstract is missing.