00632pam a2200193 a 4500020001500000082001600015100001700031245004800048250001200096260003400108300002400142500010900166650002100275650003300296650001900329650002800348654004300376700001900419  a072165649800a616.33bLAU1 aLaufer, Igor10aDouble contrast gastrointestinal radiology   a2nd ed.  aPhiladelphia bSaundersc1992  axii, 701 p. bill.   aRev. ed. of: Double contrast gastrointestinal radiology with endoscopic correlation / Igor Laufer. 1979. 0aDigestive organs 0aRadiography, Double-contrast 2aContrast Media 2aGastrointestinal System  aGastroenterology                      1 aLavine, Marc S