The Sikorsky twin-engined amphibian type S-38 model 1928.

Bibliographic Details

Corporate Authors:	Sikorsky Manufacturing Corporation, United States. National Advisory Committee for Aeronautics
Format:	Book
Language:	English
Published:	Washington, [D.C.] : National Advisory Committee for Aeronautics, [1928]
Series:	Aircraft circulars ; no. 79.
Subjects:	Sikorsky S-38 (Amphibian plane)