--am hk  eng
++000    00000nam a2200000 a 4500
++020    |a0716660547
++090    |a574 YOU
++245 00 |aYoung Scientist 4 : The Living World
++250    |a1st ed.
++260    |aChicage:|bWorld Book,|c1990.
++300    |a62 p.:|bcol.ill.;|c28 cm.
++690    |aBiology_生物