PTRD [SEP] service entry
What year was the service entry date for PTRD? What was the year PTRD entered service? In what year did PTRD enter service? What year was PTRD made? What year is PTRD associated with? In which year was the service entry date for PTRD? What year was PTRD introduced? What was the year that PTRD entered service? What year was PTRD commissioned? What year did PTRD come into use?
1941
-1
Section::::Abstract.
PTRD-41
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