TY  - BOOK
AU  - Urquhart, Leonard Church
AU  - O'Rourke, Charles Edward
TI  - Steel structures: stresses in simple structures 
AV  - TG 265 U71s
PY  - 1926///
CY  - New York
PB  - McGraw-Hill
KW  - Esfuerzo y tensión
KW  - Armazones
ER  -