00253nam a2200097Ia 4500008004100000020001500041100002000056245004200076260002700118300001000145260212s9999||||xx |||||||||||||| ||und||  a3540531211  aEckstein, Fritz 0aNucleic Acids and Molecular Biology 5  bSpringeraU.S.A.c1991  a251p.