Chasovye pi︠a︡togo okeana /
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Tikhonov, K. V.
Khalipov, I. F.
Moskva : Izd-vo DOSAAF,
1971.
John and Ljubica Erickson collection.
Air defenses