00000127,Explore Scientific ES80 80mm f/6 ED ,Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7 - FCD100-0806-02-FF,Microelectronic Circuits: Theory And Applications, 5th Edition,Microelectronic Circuits: Theory and Applications 6 Edition