Roberts, H. J. 1924- Difficult diagnosis; Robert B. Taylor - Philadelphia, Saunders, 1992 - xxv, 548p.: ill. includes Bibliography ISBN: 0721634818 LCCN: 58007957 Nat. Bib. No.: GB58-17064 Subjects--Topical Terms: Diagnosis. LC Class. No.: RC71 / .D54 1992 Dewey Class. No.: 616.075