Planetariums Unlimited, a subsidiary of Viewlex, Inc., is now offering the first complete series of school planetarium instruments.
Iowa Science Teachers' Journal
© Copyright 1968 by the Iowa Academy of Science
"Full Capability and Automatic-Program Planetariums Offered to Schools for the First Time,"
Iowa Science Teachers Journal: Vol. 5
, Article 5.
Available at: https://scholarworks.uni.edu/istj/vol5/iss4/5