Introduction to scientific research
Wilson, E Bright Jr
Introduction to scientific research - New York: Macraw-Hill Book Company, Inc., 1952 - x, 373p.
Scientific research
Research problems Elementary scientific method
5.001.5 / J2;2
Introduction to scientific research - New York: Macraw-Hill Book Company, Inc., 1952 - x, 373p.
Scientific research
Research problems Elementary scientific method
5.001.5 / J2;2