TY  - BOOK
AU  - Ramsey,A.S.
TI  - Statics : a text book for the use of higher divisions in schools and for first year students at the universities / 
U1  - 531.2 RAM  
PY  - 1941///.
CY  - Cambridge : 
PB  - The University Press, 
KW  - Parallelogram
KW  - Theorem of moments
KW  - Coplanar forces
ER  -