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040 _aPINCKNEY COMM. SCHOOLS - 9/12
245 1 4 _aThe living earth.
_h[Videorecording].
260 0 _aWashington, D.C. :
300 _a1 videocassette (25 min.) :
_bsd., col. ;
_c1/2 in. + teacher's guide.
500 _aDistributed in Australia by Advanced Education Services.
520 _aProgram provides an overview of the ecosystem of the Earth, focusing particularly on the damage to the ecosystem done by human activities.
650 0 _aEcology.
650 _aNature
_xEffect of human beings on.
651 _aEarth.
710 _aNational Geographic Society (U.S.).
942 _c UKN
999 _c46805
_d46805