Davis, Calvin Olin, 1871-
A Guide to Methods and Observation in History : Studies in High School Observation [recurso electrónico] / Calvin Olin Davis - Project Gutenberg, 2007 - Project Gutenberg 20893 .
Public domain in the USA.
Text
History -- Study and teaching
D
A Guide to Methods and Observation in History : Studies in High School Observation [recurso electrónico] / Calvin Olin Davis - Project Gutenberg, 2007 - Project Gutenberg 20893 .
Public domain in the USA.
Text
History -- Study and teaching
D