000			00291nam a2200133Ia 4500
008			210707s2009 xx 000 0 und d
041			_aeng
082			_aCD208
100			_aBhat, P Keshava
245			_aHelical helix
260			_c2009
650			_aAstronomy
906			_aHelical helix
999			_c177242 _d177242