1. 04. English Audio Visual Tadpoles and frogs.   Publication: Washington : The Society, 1979 , Title from data sheet. | Also issued as videorecording. Date:1979 Availability: Copies available: (1), Actions:
2. 09.  Reference A world of animals   Publication: Washington, DC : The Society, 1994 . 1 computer laser optical disc : 4 3/4 in. + Date:1994 Availability: Copies available: (1), Actions:
3. 09.  Reference A world of plants   Publication: Washington, DC : The Society, 1994 . 1 computer laser optical disc : 4 3/4 in. + Date:1994 Availability: Copies available: (1), Actions: