Recreation Leisure 66 Management 49 Sports 37 Congresses 24 Periodicals 24 Older people 22 Parks 21 Recreational surveys 20 Recreation areas 18 Physical education and training 17 Planning 16 Research 16 Handicapped 15 Tourism 15 Youth 12 People with disabilities 11 Economic aspects 10 Recreational therapy 10 Social aspects 10 Recreation leadership 9 Services for 9 Finance 8 Health education 8 Leisure industry 8 Recreation and state 8 Vocational guidance 8 Disabled 7 Outdoor recreation 7 Bibliography 6