Periodicals 248
Electronic journals 125
Libros electrónicos 101
Pe ́riodiques 75
Computer network resources 12
Zeitschrift 12
Periodical 10
Congresses 5
Pe ́riodique e ́lectronique (Descripteur de forme) 5
Ressource Internet (Descripteur de forme) 5
History 4
Internet Resources 4
Publicaciones seriadas 4
Conference papers and proceedings 3
Fulltext 3
Libros electronicos 3
Online-Publikation 3
Problems, exercises, etc 3
Electronic journal 2
Libros electr{acute}onicos 2
Online resources 2
Study and teaching (Elementary) 2
Aufsatzsammlung 1
Bibliographie 1
Bibliography 1
Case studies 1
Collections 1
Conference proceedings 1
Elektronische Publikation 1
Problems and exercises 1
Schriftenreihe 1
Statistics 1
Tables 1
Tidsskrifter 1
Traductions du russe 1
Yearbooks (form) 1
periodika 1