portable operating system
portable operating system for unix
portable operating system interface
portable operating system interface for computing systems
portable operating system interface for unix
all round operating table
child orthopaedic operating table
general purpose operating table
operating table for thoracoplasty
operating table-gynaecological
side-controlled multipurpose operating table
universal operating table
motor-driven operating table
multiopurpose operating table
operating in all weathers operating
present operating cost and annual operating cost
Analysis of variance table (ANOVA table)