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2. Clinical Pediatric Urology;Campbell, M.F.,1951
3. Cryptorchism;Charny, C.W.; Wolgin, W.,1957
4. Surgical experiences from 1,222 operations for undescended testis;Gross, R.S.; Jewett, T.C.;J. Amer. med. Ass,1956
5. Undescended testes;Hand, J.R.;Trans. Amer. Ass. gen.urin. Surg,1955