International relations 825 Foreign relations 504 Plants 489 Plant physiology 482 Plant pathology 450 Macroeconomics & related topics 385 India 372 International economic relations 337 Medicinal plants 336 History 318 Botany 315 Plant breeding 274 Plant Protection 244 Plant diseases 235 Industrial relations 193 International Relations 190 Semantics 178 Public relations 169 United States 165 Dissertations, Academic (Ph.D) 151 Economics 150 Interpersonal relations 146 Plant biotechnology 141 Plant disease 140 Politics and government 135 PLANT 131 Ethnic relations 130 Topological and related algebra and groups 123 Customer relations management-- CRM 122 Globalization 119