bab-instr
Instruction manual to operate and maintain Charles Babbage's 2nd Difference Engine built by Barrie Holloway and Reg Crick, June 1991 for the Science Museum, London SW7 2DD.
Instruction manual to operate and maintain Charles Babbage's 2nd Difference Engine built by Barrie Holloway and Reg Crick, June 1991 for the Science Museum, London SW7 2DD.