Problems of Post-Communism was created in 1954.
Nobody's Problems was created in 1971.
Inverse Problems was created in 1985.
Luxury Problems was created in 2005.
The Problems of Philosophy was created in 1912.
Good Problems was created in 2007.
Welfare Problems was created in 2003.
The Thirteen Problems was created in 1932-06.
Social Problems - journal - was created in 1953.
Little Problems was created on 1989-02-12.
Hot Problems was created on 2012-04-15.
Behavioral Problems was created on 2009-04-21.
Dog Problems was created on 2006-05-19.