00333nam a2200121Ia 4500008004100000022001400041040001100055100001600066245005200082260005100134300001500185300001100200251112s9999||||xx |||||||||||||| ||und||  a0028-0836  aCNCLSA  aJohn Maddox 0aNaturebInternational Weekly Journal of Science  cJuly 30, 1992bMacmillan Magazines LtdaLondon  aP. 355-776  bV. 358