Cycles in Nature

Shows how living things are affected by cycles, such as the cycle of day and night, the seasons, animal life cycles, and chemical cycles.

Related films

Sources

  1. A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, description
  2. 16mm Filmography (legacy record) — creator, sound, genre, catalog record