Moore, Nick
How to do research : a practical guide to designing and managing research projects
Facet Publishing, 2006
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Rees, Colin
An introduction to research for midwives / Colin Rees
Churchill Livingstone/Elsevier, 2012
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Yin, Robert K.
Case study research: design and methods
SAGE Publication, 1989
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Yin, Robert K.
Case study research: design and methods
SAGE Publication, 1985
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Wilkes, F.M.
Elements of operational research
McGraw-Hill, 1987
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