TY  - BOOK
AU  - Niordson,Frithiof I.
TI  - Introduction to shell theory: Text-book 
PY  - 1980///
CY  - [Lyngby]
PB  - Technical University of Denmark
KW  - Shells (Engineering)
KW  - Text-books
N1  - Includes bibliogr. references and index
ER  -