Skip to Main Content

Skip Nav Destination

Article navigation

Research Article| December 01 1978

Persistent Problems

Ingrith D. Olsen

Ingrith D. Olsen

Search for other works by this author on:

PubMed

Google Scholar

The American Biology Teacher (1978) 40 (9): 527–556.

https://doi.org/10.2307/4446406

You do not currently have access to this content.

Don't already have an account? Register

You could not be signed in. Please check your email address / username and password and try again.