Identification of crop seeds.

Published: Columbus, Ohio: Curriculum Materials Service, 2001.
Subjects:
Physical Description:1 videodisc: sd., col.; 4 3/4 in..
Format:System requirements : Macintosh, Power Macintosh, Apple System Software Version 7.1.2 or later ; Windows, Microsoft Windows 95, Windows 98, or Windows NT with Service Pack 3 or later.