(1933). A bibliography on the use of airplanes in insect control from 1922 to 1933.
Cita Chicago (17th ed.)A Bibliography on the Use of Airplanes in Insect Control from 1922 to 1933. 1933.
Cita MLA (9th ed.)A Bibliography on the Use of Airplanes in Insect Control from 1922 to 1933. 1933.
Atenció: Aquestes cites poden no estar 100% correctes.