Vought-Sikorsky 300 (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Vought-Sikorsky 300" in Polish language version.

refsWebsite

Global rank Polish rank

1republicworld.com

low place

5,900^th place

low place

6,296^th place

1sikorskyarchives.com

low place

6,863^rd place

aviastar.org

K.Munson: Vought-Sikorsky VS-300 z: Helicopters And Other Rotorcraft Since 1907 (1968). aviastar.org. [dostęp 2021-08-15]. (ang.).

republicworld.com

Bhavya Sukheja: World’s First Practical Helicopter VS-300 Took Flight At Stratford On This Day In 1939. republicworld.com. [dostęp 2021-08-15]. (ang.).

sikorskyarchives.com

I. I. Sikorsky: VS-300 Helicopter. Igor I. Sikorsky Historical Archives. [dostęp 2021-08-15]. (ang.).