1. An investigation of the laws of thought on which are founded the mathematical theories of logic and probabilities;BOOLE, G.,1854
2. Introduction to the;CARPENTER, J.E.,1948
3. Papyrus Ebers;EBERS, G.,1875
4. Seeking and developing new products and processes;EILOART, T.M.B.;The Inventor,1969
5. 'On line' system for patients has a double advantage;FISHER, B.J.,1968