TY - JOUR
AB - APRIL 7, 195& 578 THE MEDICAL JOURNAL OF AUSTRALIA adopted the Pin Index Safety System and has covered it with supplement No. 1 to CB4-1950. The system has also been recommended by the International Standards Organiza- tion as a world standard. [The mention of a book in this column does not implv that The system consists of a combination (peculiar to each no review will appear in a subsequent issue.] gas or gas mixture) of two pins, which project from the apparatus yoke assembly. Appropriately matching holes are provided in the cylinder valves to prevent attachment to any "Obstetrical Practice", by Alfred C. Beck, M,D., and but the correct combination (Figure I). Alexander H. Rosenthal, M.D.; Sixth Edition; 1955. Baltimore: Holes-or pins-in six positions allow the combinations as The Witltams and Wilkins Company. Sydney: Angus and Robertson, Limited. 10" x 7", pp. 1080, with many illustrations. indicated in Figure II. All vital dimensions have been care- Price: £6 12s. fully "toleranced" to prevent a drift which could prevent International uniformity. The first edition was published In 1935 and the fifth in ] 951. "The Year Book of Pediatrics (1955-1956 Series) ", edited b)' Sydney S. Gellis, M.D., 1955. Chicago: 
TI - Principles of Medical Statistics
JF - Medical Journal of Australia
DO - 10.5694/j.1326-5377.1956.tb35587.x
DA - 1956-04-01
UR - https://www.deepdyve.com/lp/wiley/principles-of-medical-statistics-b11EEjVywp
SP - 578
EP - 578
VL - 1
IS - 14
DP - DeepDyve
ER -