Audience: General, Grades 4-12. Subjects: Social Studies. 1928: The Discovery: Help Through Penicillin, 1920's (2010)
Broadcast In: English Duration: 0:08:15Audience: General, Grades 4-12. Subjects: Social Studies. 1928: The Discovery: Help Through Penicillin, 1920's (2010)
Broadcast In: English Duration: 0:08:15