Category:Book series introduced in the 20th century

B

• Book series introduced in the 1900s (10 C)
• Book series introduced in the 1910s (8 C)
• Book series introduced in the 1920s (8 C, 2 P)
• Book series introduced in the 1930s (10 C, 1 P)
• Book series introduced in the 1940s (10 C)
• Book series introduced in the 1950s (10 C)
• Book series introduced in the 1960s (10 C)
• Book series introduced in the 1970s (10 C)
• Book series introduced in the 1980s (10 C)
• Book series introduced in the 1990s (10 C)