Russo, Francesco. <br/><br/>
Tangents and secants of algebraic varieties :  Notes of a course / 
Francesco Russo. 
 - Rio de Janeiro :  IMPA,  2003. 
 - 182 pages ;  21 cm 
<br/><br/><label>ISBN: </label>852440213X 9788524402135 
<br/><br/><label>Dewey Class. No.: </label>516.35  / R969t