THE GEIGER-MULLER COUNTER by Leon F Curtiss Published by the United States Department of Commerce, 1950 National Bureau of Standards, Circular 490. Technical handbook / manual, offering those who happen to find themselves with a Geiger counter, the chance to read up on the history, theory and full scientific analysis of the instrument. Original US Dep. of Commerce issue, it's definitely a specialist booklet, very detailed and rare, too... Check the 12 pictures carefully, they're part of the description, too. 28 pages Published by United States Department of Commerce. 1950 edition Paperback 200mm x 260mm format, approx. A good reading and reference copy Binding intact, with light rusting / tarnishing to staples. No major creases Noticeable small bumps / scuffs and light wear, one small tear on the back, plus light, random marking to cover, as per age. Pages yellowed, but in good condition, just the usual signs of light reading / shelf and storage wear. No pen or ink marks or notations. Pictures uploaded, various views. No library / 'stock' photos used, I've actually got the item, and what you see is what you get... Buy-it-Now, $47.50, shipping included to USA. Thanks for looking! :o) Postage - USA - Free shipping Rest of World, not free.