Here is a 12 page paperback booklet titled "The Bi-Coloured Guaiac Test for the Cerebro-Spinal Fluid" by J. Godwin Greenfield, M.D. Edin., F.R.C.P. Lond., Pathologist to the National Hosptial, Queen Square; and Ruby O. Stern, M.B. Lond., Clinical Assistant at the Hospital. Reprinted from The Lancet, August 16th, 1930, p.339. Signed on the top corner of the front of the wrap "With compliments R.O.S."

8 1/2 by 5 1/2 inches. 12 pages. Paperback with the original printed paper wrap. Thread bound. The wrap and contents show age toning, soiling and dustiness, a few spots, along with creases and crinkles. The back of the wrap has a more noticeable sharper crease at the top corner and near the spine. Please see photos and please explore my other listings for more medical books and offprints.