000			00277nam a22001337a 4500
020			_a072163043X
082			_a574.87 DER
100			_aDe Roberties
245			_aCell Biology
250			_a6
260			_aW.B Saunders Company ,London _c1947
300			_a615
942			_cBK
999			_c369517 _d369517