TY  - GEN
ED  - British Standard Institution
TI  - B.S. 3238 : Pt. 2 : 1964 : Graphical symbols for components of servo-mechanisms : Pt. 2 ; General servo-mechanisms
PY  - 1964///
CY  - London
PB  - British Standards Instituion
N1  - STD1417
ER  -