REFERÊNCIAS SOBRE FILATELIA MÉDICA I / REFERENCES ON MEDICAL PHILATELY I

1- THE HISTORY OF UROLOGY ON POSTAGE STAMPS AND CANCELLATIONS
The Journal of Urology, Volume 158, Issue 4, October 1997, Pages 1335-1339 (Clinical Urology: Historical Article)
E. Rugendorff, T. Wilson (Erwin W. Rugendorff from Frankfurt am Main, Germany; Tom Wilson from Ashford, England)

2- RE: THE HISTORY OF UROLOGY ON POSTAGE STAMPS AND CANCELLATIONS
The Journal of Urology, Volume 160, Issue 1, July 1998, Pages 135-136 (Clinical Urology: Letters to the Editor)
A. Shamsa (Ali Shamsa, Department of Urology; Mashhad University of Medical Sciences; Mashhad, Iran)