1. Scientific method; an inquiry into the character and validity of natural laws
Author: Ritchie, Arthur David
Library: Central Library and Documentation Center (Kerman)
Subject: ، Science - Methodology
Classification :
Q
175
.
R5
1923
2. Scientific method: an inquiry into the character and validity of natural laws
Author: Arthur David Ritchie
Library: Library of the Faculty of Economics University of Tehran (Tehran)
Subject: Science-Methodology
Classification :
Q
175
.
R5
3. Studies in the history and methods of the sciences
Author: Ritchie, Arthur David
Library: Library of Mofid University (Qom)
Subject:
Classification :
Q
125
.
R5
S7
1965
