TY  - BOOK
AU  - Oskar Pfungst
TI  - Clever Hans (The Horse of Mr. Von Osten)
KW  - Science
UR  - https://new.zodml.org/sites/default/files/2023-07/clever_hans_the_horse_of_mr._von_osten_by_oskar_pfungst_tag_psychology_comparative_animal_intelligence_horses_animal_training.epub
ER  -