FWIW, on my bookshelf I have Fortran books in French, German, Russian, Mandarin, Danish, and Japanese, so in those languages one is not starting from scratch. Three of these books, in German, Russian and Japanese, respectively, are translations done with my collaboration.
Below is a list, from 2004, of books on Fortran in languages other than English.
Regards,
Mike Metcalf
Chinese:
Programming Language Fortran 90 - He Xingui, Xu Zuyuan, Wu Qingbao and
Chen Mingyuan, China Railway Publishing House, Beijing,
ISBN 7-113-01788-6/TP.187, 1994.
Fortran 90 - Walter S. Brainerd, Charles H. Goldberg, Jeanne C. Adams,
CHEP, Beijing and Springer, Berlin, 2000, ISBN 7-04-007937-2
(a translation of Programmer’s Guide to Fortran 90).
Dutch:
Fortran 90 - W.S. Brainerd, Ch.H. Goldberg, and J.C. Adams, translated
by J.M. den Haan, Academic Service, 1991, ISBN 90 6233 722 8.
Finnish:
Fortran 90/95 - Juha Haataja, Jussi Rahola and Juha Ruokolainen.
Center for Scientific Computing (Finland), 2001, 3rd edition,
ISBN 952-9821-60-3. WWW version: http://www.csc.fi/oppaat/f95/
French:
Fortran 90; Approche par la Pratique - P. Lignelet, Série
Informatique Éditions, Menton, 1993, ISBN 2-909615-01-4.
Fortran 90. Les concepts fondamentaux, the translation of “Fortran
90 Explained” M. Metcalf, J. Reid, translated by M. Caillat and
B. Pichon, AFNOR, 1993, Paris, ISBN 2-12-486513-7.
Fortran 90; Initiation à partir du Fortran 77 - Aberti, Série
Informatique Éditions, Menton, 1992, ISBN 2-909615-00-6.
Les spécificités du Fortran 90, M. Dubesset et J. Vignes,
Éditions Technip, 1993. ISBN 2-7108-0652-5.
Manuel complet du langage Fortran 90, et guide d’application,
P. Lignelet, Série Informatique Éditions, 1995. ISBN 2-909615-02-2.
Manuel Complet du Langage Fortran 90 et Fortran 95, Calcul
intensif et Génie Logiciel, P. Lignelet, Masson Éditions,
Paris, 1996, ISBN: 2-225-85229-4.
Programmer en Fortran 90, C. Delannoy, Eyrolles, 1992,
ISBN 2-212-08723-3.
Traitement des données numériques avec Fortran 90, M. Olagnon,
Masson Éditions, 1996, ISBN 2-225-85259-6.
Structures des données (et leurs algorithmes) en Fortran 90/95,
P. Lignelet, Masson Éditions, Paris, ISBN 2-225-85373-8.
German:
Fortran 90 Lehrbuch - D. Rabenstein, Hanser, 1995, ISBN 3-446-18235-7.
Die Programmiersprache F - W. Gehrke, Springer-Verlag, ISBN 3-540-63376-6.
Fortran 90 - B.Wojcieszynski and R.Wojcieszynski, Addison-Wesley, 1993,
ISBN 3-89319-600-5.
Fortran 90: eine informelle Einführung - M. Heisterkamp,
BI-Wissenschaftsverlag, 1991, ISBN 3-411-15321-0.
Fortran 90 Kurs: technisch orientiert - G. Schmitt, Oldenbourg,
1996, ISBN 3-486-23896-5.
Fortran 90, Lehr- und Arbeitsbuch für das erfolgreiche Programmieren -
W.S. Brainerd, C.H. Goldberg, and J.C. Adams, translated by P. Thomas
and K. Paul, R. Olbenbourg Verlag, Muenchen, 1994, ISBN 3-486-22102-7.
Fortran 90 Lehr- und Handbuch - T. Michel, BI-Wissenschaftsverlag, 1994.
Fortran 90 Referenz-Handbuch: der neue Fortran-Standard - W. Gehrke,
Carl Hansen Verlag, 1991, ISBN 3-446-16321-2.
Programmierung in Fortran 90 - Schobert, Oldenburg, 1991.
Programmierung mit Fortran 90 - Bäumer, Vieweg, Braunschweig, 1997,
ISBN 3-528-05208-2.
Programmieren in Fortran - Erasmus Langer, Springer-Verlag, Wien,
New York, 1993. ISBN 3-211-82446-4, 0-387-82446-4.
Software Entwicklung in Fortran 90 - Überhuber and Meditz, Springer
Verlag, 1993, ISBN 0-387-82450-2.
Italian:
Some resources in Italian, including a manual, are at
http://space.tin.it/computer/gciabu.
Japanese:
Fortran 90 Explained - Metcalf and Reid, translated by H. Nisimura,
H. Wada, K. Nishimura, M. Takata, Kyoritsu Shuppan Co., Ltd., 1993,
ISSN 0385-6984.
Russian
An Explanation of the Fortran 90 Programming Language (translation of
Fortran 90 Explained - Metcalf and Reid), translated P. Gorbounov,
Mir, Moscow, 1995, ISBN 5-03-001426-8. Available also from
Petr.Gorbounov@cern.ch.
FORTRAN 77 to Fortran 90 Tutorial - Einarsson and Shokin, Russian
Academy of Sciences, Novosibirsk, 1995, ISBN 5-85826-013-6.
Swedish
Fortran 90 - en introduktion - Blom, Studentlitteratur, Lund, 1994,
ISBN 91-44-47881-X.