Pilot Chart of the North Pasific Ocean October 1971 / North Pasific Tropical Cyclones - Typhoons, Hurricanes and Tropical Storms 1970 -merikartta, jonka toisella
Pilot Chart of the North Pasific Ocean October 1971 / North Pasific Tropical Cyclones - Typhoons, Hurricanes and Tropical Storms 1970 -merikartta, jonka toisella puolella artikkeli sääilmiöistä