00393nam a22001337a 4500008004100000040005500041080001200096100002000108245003700128260006000165300001000225650001200235653001200247230511b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a575bM9  aLevy, Stuart B   aGene transfer in the environment  aNew York:  bThe Macmillan Publishing Company,   c1989  a434p.  aScience  aBiology