TY  - BOOK
AU  - KETCHUM,Milo S.
TI  - Structural engineers handbook: data for the design and construction 
PY  - 1924///
CY  - New York
PB  - McGraw-Hill Publishing Company
UR  - http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=27646
ER  -