Mikhael Gromov <br/><br/>
Partial differencial relations 

 - London  Springer Verlag  1986 
 - 363 p.  24 cm 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>515.353  / MIK