1. 01. English Non Fiction World powers in the twentieth century / by Ward, Harriet. Publication: London : British Broadcasting Corporation : | Heinemann Educational Books, 1985 . xvii, 333 p. : 25 cm. Date:1985 Availability: Copies available: (1), Actions:
2. 04. English Audio Visual Planet Earth as you've never seen it before.   Publication: [S.l.] : | [New York, N.Y.] : | Burbank, CA : British Broadcasting Corporation ; | Distributed by BBC Worldwide Americas ; | Warner Home Video, 2007 . 5 videodiscs (550 min.) : , Special features: 110 minutes of behind-the-scenes footage - one 10-minute behind the scenes program for each episode; "Planet Earth: the future" 3-part, 2 1/2 hour documentary. | Title from container. 4 3/4 in. Date:2007 Availability: Copies available: (1), Actions: