Soft cover. Condition: Good. Univ. of New Mexico Press, Albuquerque, 1946. The authors were staff members of the Los Alamos Atomic Bomb Laboratory. Foreword by Enrico Fermi. Small paper wraps, stapled. A crease runs through the entire pamphlet, but is not very noticeable. 58 pages an 11 pages of photos (unpaginated). ".a factual primer devoted to atomic energy and the atomic bomb.".