Mullard Technical Handbook Book1 Part1 Transistors AC127 to BF451 September 1974 by Mullard Ltd. Home » Downloads » Languages » English » Mullard Technical Handbook Book1 Part1 Transistors AC127 to BF451 September 1974 by Mullard Ltd. Likes0 Buy Now SaveSavedRemoved 0 WordPress › Error There has been a critical error on this website.Learn more about troubleshooting WordPress.