TY  - BOOK
AU  - El-Hafez, M. Bassam.
AU  - Powell, Graham, H., coaut.
ED  - University of California, Earthquake Engineering Research C-enter.
TI  - Computer aided ultimate load design of unbraced mustistory -steel frames / by M. Bassam El-Hafez and Graham H. Powell
CY  - Berkeley, Calif. : University of California, College of Engineering
ER  -