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PTSA abbr.
abbr.	Peters Township Sanitary Authority
abbr., avia.	prior to sample approval
abbr., chem.	p-Toluenesulfonic acid (п-толуолсульфокислота natalitom)
abbr., ed.	Parent Teacher Student Association
abbr., el.	pulse torque servo amplifier; pure time-sharing assignment
abbr., microel.	Planar Triple Spiral Antenna (InessaS)
abbr., org.chem.	para-toluene sulfonic acid (igisheva); para-toluene sulphonic acid (igisheva); para-toluenesulfonic acid (igisheva); para-toluenesulphonic acid (igisheva); p-toluene sulfonic acid (igisheva); p-toluene sulphonic acid (igisheva); p-toluenesulphonic acid (igisheva)
abbr., space	prior to sample-approval