00359nam a2200157Ia 4500008004100000020001500041082001400056100001900070245001200089250000600101260003700107300000900144650001800153650001800171653001200189170901s1979    xx            000 0 und d  a0879011009  a574bC92B  aCurtis, Helena 0aBiology  a3  aNew YorkbWorth Publishersc1979  a1043  aLife sciences  aPure Sciences  aBiology