00253pam a2200109 a 4500020000500000041000800005082001600013100001500029245006600044260002300110300001000133  c  aeng  a574.19bALL  aAllen.M.J.  aChanges And Field Effects In Biosysteams-3hTextual Documents  a[s.l]:bBirkhauser  a502p.