"Clever Hans was a horse who could answer questions about math, music, clocks and more, and studying how he did it led to the development of the double-blind study"-- Provided by publisher.
Audience
Ages: 4-8. G.P. Putnam's Sons.
Grades: K-1. G.P. Putnam's Sons.
Note
Description based on print version record and CIP data provided by publisher; resource not viewed.