Vetenskapens värld - Season 1997 Episode 5

Season 1 Season 2 Season 1977 Season 1978 Season 1979 Season 1980 Season 1981 Season 1982 Season 1983 Season 1986 Season 1989 Season 1990 Season 1991 Season 1992 Season 1993 Season 1994 Season 1995 Season 1996 Season 1997 Season 1998 Season 1999 Season 2000 Season 2001 Season 2002 Season 2003 Season 2004 Season 2005 Season 2006 Season 2007 Season 2008 Season 2009 Season 2010 Season 2011 Season 2012 Season 2013 Season 2014 Season 2015 Season 2016 Season 2017 Season 2018 Season 2019 Season 2020 Season 2021 Season 2022 Season 2023 Season 2024 Season 2025