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1ανά Trochim, Willliam M. K.Θέματα: “...Research process Research design Data collection- research...”
Έκδοση 2003
Printed Book -
2ανά McNeill, PatrickΘέματα: “...Research Methodology Research design Data collection- research Research process...”
Έκδοση 2005
Printed Book -
3ανά Ranjit KumarΘέματα: “...Research Design Data Collection Sampling Technical Writing Data collection ethics Research data...”
Έκδοση 2006
Printed Book