Doolittle <br/><br/>
Of Urfs and orfs ( A Primer on how to Analyze Derived Amino acid sequences  - 
Russell F.Doolittle	 
 - 1 
 - Mill Valley				  University Science Books  1987	 
 - 103 
<br/><br/><label>ISBN: </label>0935702547						 
<br/><br/><label>Dewey Class. No.: </label>600  / DOO