Marxian economics 21 Capitalism 10 Marine ecology 3 Social sciences 3 Capital 2 Climatic changes 2 Communication 2 Communism and ecology 2 Contracts, Maritime 2 Economic development-- Economic Planning 2 Environmental economics 2 Environmental impact 2 Fraud 2 Freight and freightage 2 French poetry 2 Hijacking of ships 2 LITERARY COLLECTIONS / Continental European 2 LITERARY CRITICISM / Poetry 2 Land Resources 2 Leisure, Recreation and Tourism Economics, (New March 2000) 2 Marine ecosystem health 2 Marine fishes 2 Marine resources conservation 2 Marine sedimentation 2 Maritime terrorism 2 Marxian systems--Socialism--Economics 2 Mass media 2 Maxian economics 2 Monopolies 2 Natural Resource Economics, (New March 2000) 2