The principles of scientific research /
Freedman, Paul.
The principles of scientific research / Paul Freedman - 2d ed. - Oxford, New York, Pergamon Press [1960] - 227 p. 24 cm.
Research.
007 / FRE N50P
The principles of scientific research / Paul Freedman - 2d ed. - Oxford, New York, Pergamon Press [1960] - 227 p. 24 cm.
Research.
007 / FRE N50P