Books by L. Calabi:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Calabi, L. (Lorenzo): On the theory of Boolean formulas : shortest and prime formulas (L.G. Hansom Field, Bedford, Massachusetts : Air Force Cambridge Research Laboratories, Office of Aerospace Research, United States Air Force, 1966., 1966), also by E. W. Samson and Air Force Cambridge Research Laboratories (U.S.) (page images at HathiTrust)- Calabi, L. (Lorenzo): On the theory of boolean formulas : subformulas and substitution operators (L.G. Hansom Field, Bedford, Massachusetts : Air Force Cambridge Research Laboratories, Office of Aerospace Research, United States Air Force, 1965., 1965), also by E. W. Samson, Air Force Cambridge Research Laboratories (U.S.), and United States. Air Force. Office of Aerospace Research (page images at HathiTrust)
Find more by L. Calabi at your library, or elsewhere.