TY  - BOOK
AU  - Ferraris, G.
AU  - Faber, Oscar., Tr.
TI  - Dioptric instruments being an elementary exposition of gauss theory and its applications German translation of Ferraris Italian work entitled "The fundamental properties..
U1  - 535.84 
PY  - 1919///
CY  - London
PB  - H.M.S.O.
ER  -