TY  - BOOK
AU  - Tomas Ortin
TI  - Gravity and Strings
SN  - 9780511616563
PY  - 2004///
PB  - Cambridge University Press
UR  - http://opacrri.rri.local.net/cgi-bin/koha/opac-retrieve-file.pl?id=0377395bc595c73f3ddc637d9105e71b
ER  -