00415nam a22001577a 4500008004100000020001800041040005500059080001200114100002200126245001800148260003700166300001100203650001300214653001200227700001800239230502b        |||||||| |||| 00| 0 eng d  a0 7181 1994 0  aNational Science LibrarycNational Science Library  a502bM1  aPettifer, Julian   aNature watch   aLondon: bMichael Joseph, c1981  a207p.   aScience   aNature   aBrown, Robin