bibliographie bibliography conflicten conflictmanagement education einführung filosofischeaspecten fredsbyggande groundedtheory h61 kennistheorie konfliktlösning konfliktteori kwalitatievemethoden kwantitatievemethoden lb33000 medical methodologie methodology mr2200 mr2600 méthodologie nursing onderzoeksmethoden ouvragesderéférence peace-building philosophie philosophy psychology qh244 qualitativeinhaltsanalyse qualitativeresearch quantitativeresearch recherche referencesbooks research sciencessociales soc019000psy030000med058200edu037000 socialscience socialsciences sociologie theorievorming theory tolerans toleration wetenschapsfilosofie