00428nam a22001457a 4500008004100000040005500041080001500096245005100111260005500162300001000217650001100227653001500238942001200253999001700265230517b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a628.51bL6  aEarth in danger: bPollution and conservation   aNew York:   bDoubleday & Company, Inc.,    c1977  a144p.  aEarth   aPollution   2udccBK  c46475d46475