000			00358nam a2200121Ia 4500
008			140227s9999 xx 000 0 und d
080			_a324
100			_aGray JS et al.,
245			_aFAO/ Manual of Methods in Aquatic Environment Research
260			_bFood and Agriculture Organization of the United Nations _aRome _c1992
300			_a50p.
942			_2udc _cTR
999			_c5601 _d5601