Supplement to H[ydrographic] O[ffice publication] no. 260.
Naval air pilot, Northwest Africa (including the Azores, Madera, and Canary Islands); weather summary.

APA Citation

United States. Weather Bureau. (19). Supplement to H[ydrographic] O[ffice publication] no. 260: Naval air pilot, Northwest Africa (including the Azores, Madera, and Canary Islands); weather summary. Washington: Hydrographic Office, U.S. Navy Dept..

MLA Citation

United States. Weather Bureau. Supplement to H[ydrographic] O[ffice Publication] No. 260: Naval Air Pilot, Northwest Africa (including the Azores, Madera, And Canary Islands); Weather Summary. Washington: Hydrographic Office, U.S. Navy Dept., 19.

Warning: These citations may not always be complete (especially for serials).