Write to the booksellers3 books for « clayton h helm »Edit
Sunspot Changes and Weather Changes , Smithsonian Miscellaneous Collections, Volume 104, Number 19 - Publication n° 3816, March 6, 1946
Government Printing Office, Washington , Smithsonian Institution Malicorne sur Sarthe, 72, Pays de la Loire, France 1946 Book condition, Etat : Bon paperback, original editor's grey printed wrappers grand In-8 1 vol. - 29 pages
22 figures ex-library, a stamp on the front part of the wrappers, else near fine copy, no other markings
The Sunspot Period , Smithsonian Miscellaneous Collections, Volume 98, Number 2 - Publication n° 3526, March 27, 1939
Government Printing Office, Washington , Smithsonian Institution Malicorne sur Sarthe, 72, Pays de la Loire, France 1939 Book condition, Etat : Bon paperback, original editor's grey printed wrappers grand In-8 1 vol. - 18 pages
1 plate and 12 text-figures, 6 tables ex-library, a stamp on the front part of the wrappers, else near fine copy, no other markings
The 11-Year and 27-Day Solar Periods in Meteorology , Smithsonian Miscellaneous Collections, Volume 99, Number 5 - Publication n° 3589, June 14, 1940
Government Printing Office, Washington , Smithsonian Institution Malicorne sur Sarthe, 72, Pays de la Loire, France 1940 Book condition, Etat : Bon paperback, original editor's grey printed wrappers grand In-8 1 vol. - 20 pages
13 figures ex-library, a stamp on the front part of the wrappers, else near fine copy, no other markings
