Buying of provisions / retailers / door-to-door deliveries / kind and quantity of provisions / frequency of buying / shopping centre / favourite shop / differences between shops regarding certain articles / relationship with shop or brand / shopping centre / kind of services used / products for making desserts and beautifiers / where to buy them / difference between supermarkets and grocery shops / shopping behaviour / pollution of environment / developing countries. Background variables: basic characteristics/ residence/ household characteristics/ occupation/employment/ education/ social class/ consumption of durables