Regional planning 46 History 38 Maori 21 Water-supply 21 Cities and towns 20 Growth 20 Environmental aspects 19 Planning 18 Management 12 Description and travel 11 Health and hygiene 11 Land tenure 11 Land use 11 Health planning 10 Local government 10 Railroads 9 Social conditions 9 City planning 8 Environmental policy 8 Geology 8 Historic sites 8 Urban runoff 8 Economic aspects 7 Health status indicators 7 Indexes 7 Law and legislation 7 Parks 7 Registers of births, etc 7 Transportation 7 Water quality 7 Water resources development 7 Antiquities 6 Botany 6 Citizen participation 6 Control 6 Directories 6 Drinking of alcoholic beverages 6 Forests and forestry 6 Historic buildings 6 Medical care 6 Māori 6 Natural history 6 Natural resources 6 Population 6 Services for 6 Volcanoes 6 Biography 5 Economic conditions 5 Land use, Rural 5 Pacific Islanders 5 Pests 5 Pollution 5 Prevention 5 Public health 5 Rental housing 5 Social aspects 5 Statistics 5 Statistics, Medical 5 Tourism 5 Agriculture 4 Bibliography 4 Commerce 4 Conservation of natural resources 4 Discrimination in housing 4 Drinking and boating accidents 4 Drowning 4 Emigration and immigration 4 Horticulture 4 Hospital utilization 4 Housing development 4 Immigrants 4 Local transit 4 Mathematical models 4 Periodicals 4 Pioneers 4 Public opinion 4 Rain and rainfall 4 Recreation areas 4 Research 4 Societies, etc 4 Soils 4 Storm sewers 4 Trails 4 Urban transportation 4 Activity programs 3 Attitudes 3 Auckland (Region) 3 Boats and boating 3 Camps 3 Cases 3 Charities 3 Children's accidents 3 Claims 3 Demographic surveys 3 Ecology 3 Emergency management 3 Eminent domain 3 Environmental education 3 Families 3 Forest management 3