Perfection Learning (Firm)
URI(s)
Additional Information
Exact Matching Concepts from Other Schemes
Sources
- found: Silverleaf novel. Schraff, A.E. The whispering shell, c1991:t.p. (Perfection Learning; Logan, Iowa)
Instance Of
Scheme Membership(s)
Collection Membership(s)
Change Notes
- 1993-10-22: new
- 2020-01-01: revised
Alternate Formats