00274nam a2200109 a 450000500170000008200160001710000220003324500340005525000120008926000400010130000230014120251203091013.0 a572.8WATb_ aWatson, James, D. aMolecular biology of the gene a4th ed. aMenlo ParkbBenjamic/Cummingsc1987 axxx, 1163p, 23 cm.