nature :  cloning pigs by nuclear transfer / 
by Amersham Pharmacia. 
 - Buckinghamshire :  Amersham Pharmacia Biotech,  2000. 
 - v :various pages :  color illustrations. 
 - weekly, 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Periodicals.<br/>Periodicals.<br/>Periodicals.