00293nam a2200109 a 450000500170000002000150001708200230003210000160005524500610007126000320013230000190016420251203091723.0  a0716770229  a612.01575,bD, PER  aPerutz, Max  aProtein structure: new approaches to disease and therapy  aNew YorkbW.H.Freemanc1992  axiv,326p, 22cm