000 00317 a2200121 4500
008 141010b1977 xxu||||| |||| 00| 0 eng d
082 _a301.31
100 _aCarson, Rachel
245 _aSilent spring /
_cRachel Carson
260 _aHarmondswroth:
_bPenguin Books,
_c1977.
300 _a317p.,
_bReport.
650 _aEcology
999 _c1227
_d1227