Books related to film are on the 4th floor. Books relating to cinema (and drama in general) have call numbers beginning with the letters "PN". The letters and numbers that follow indicate the specific subject area. For example:
PN1993-1999 Motion pictures
PN1993.5 History of film by country
PN1993.5.U6 United States
PN1994 General works on cinema
PN1995 General special: film criticism, aesthetics, etc.
PN1995.7 Pictures and sound
PN1995.75 Silent film
PN1995.9.A-Z Special topics (not country-specific)
PN1995.9.F54 Film noir
PN1996 Authorship, scenario writing, etc.
PN1997-1997.85 Plays, scenarios, etc.
PN1998.3.F45 Fellini, Federico
PN2287, PN2308, etc. Individual actors and actresses
PN2287.G3 Clark Gable
PN2598.L46 Vivien Leigh