John Cockcroft

Atomic energy, a series of four explanatory talks, by Jack Diamond,... H. J. Grout,... J. L. Putman,... John Cockcroft,... [What is this atomic energy ? By Jack Diamond. Nuclear reactors, by H. J. Grout. Radio-active isotopes, by J. L. Putman. The Atom and the future, by John Cockcroft.]