000			00515nam a2200181Ia 4500
008			190409s9999 xx 000 0 und d
082			_aRes 500.9 R23 1972
100			_aReader's digest.
245		0	_aMarvels and mysteries of the world around us / Reader's Digest
260			_aPleasantville, New York
260			_bThe Reader's Digest Association, Inc.
260			_cc1972.
300			_a320 p.
504			_aIncludes index.
526			_a500-599
650			_aEarth sciences--Popular works.
942			_cBK
999			_c4665 _d4665