British Rail
Train Crew Manual - D7000 Class
Locomotives With Maybach Engine & Mekydro Transmission - Fault Guide For Drivers
Chief Mechanical And Electrical Engineer Paddington -
Issue Date November 1963 - BR
33057/1
More information can be found here
Wikipedia - British Rail Class
31
GreatWestern.org
Hymek.co.uk
More Information Regarding Preserved Class 35s (Hymeks) Locomotives can be
found on the following websites:
Preserved-Diesels