Nudelman-Suranov NS-37
Nudelman-Suranov NS-37 is an autocannon or artillery model.
Also recorded as NS-37; NS 37; NS37.
Overview
37 mm autocannon aircraft armament.
In detail
It is associated with Soviet Union. The record gives 1941 as its date of establishment or first appearance.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Nudelman-Suranov NS-37”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q219606: Nudelman-Suranov NS-37
Consult the source