TY  - BOOK
AU  - Humphrey D.
TI  - Intermediate mechanics Vol.2: Statics 
U1  - 531 
PY  - 1964///
CY  - London
PB  - Longman group Limited
KW  - Mechanics
KW  - Statics
KW  - Vectors
KW  - Machines
KW  - Centre of gravity
ER  -