PubMed · 10434499
Sampling and external validity.
Abstract
The source did not provide an abstract. Follow the original record for more information.
Explore related subjects
Keep this discovery
Explore connections, maps & timelines
G A Morgan, R J Harmon. 1999. Sampling and external validity.. https://doi.org/10.1097/00004583-199908000-00023
Cite the original work for its findings. Save a collection to share your selection of sources.