Mazur, Barry <br/><br/>
Universal extensions and one dimensional crystalline cohomology 
Barry Mazur and William Messing 
 - Berlin  Springer-Verlag  1974 
 - vi,134p.; 24cm.- 
 - Lecture noter in mathematics; no.370 .
<br/><br/><label>Dewey Class. No.: </label>514.23  / MAZ