Polish tanks 7TP, 1939.
Unknown author<span style="display: none;">Unknown author</span>
before 1939 <div style="display: none;">date QS:P,+1939-00-00T00:00:00Z/7,P1326,+1939-00-00T00:00:00Z/9</div>
Komuda, Leszek (1973) <cite>Polski czołg lekki 7TP</cite>, Warszawa: TBiU No. 21