Bulletin of the XII congress of UISPP. No.2 

 - Forli  U.I. S P.P,  1994 
<br/><br/><label>Subjects--Topical Terms: </label><br/>V1:7m52:N96
<br/><br/><label>Dewey Class. No.: </label>V1:7m52:N96  / M6.2