00354nam a2200109Ia 4500008004100000040001100041100002800052245009000080260005000170300001500220300000900235251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aJohn W. Yarbro, MD, PHD 0aSeminars in OncelogybColorectal Cancer: Past Accomplishments and Future Directions I  cOctober, 1999bW. B. Saunders CompanyaLondon  aP. 475-716  bV.95