Columbia subject headings:
Mechanical engineering--Soviet Union--Bio-bibliography.
Mechanical engineers--Soviet Union--Biography.
Papkovich, Petr Fedorovich, 1887-1946--Bibliography.
Harvard subject headings:
Papkovich, Petr Fedorovich, 1887-1946--Bibliography.
Shipbuilding--Soviet Union--Bio-bibliography.
Shipbuilding--Soviet Union--Biography.
Princeton subject headings: