N-37
37 mm autocannon designed as aircraft armament
English: The N-37, Nudelman N-37 was a heavy 37 mm aircraft autocannon
Deutsch: Die NR-23 Nudelman N-37 war eine schwere 37 mm Flugzeug-Maschinenkanone
Русский: Н-37: Нудельман Н-37, авиационная пушка
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MiG-17 cannons: N-37 and NR-23 -
Chinese N-37L cannon
