Adaptation 1 Biological Resources (Plant) 1 Characterization 1 Composition and Quality of Non-food/Non-feed Plant Products 1 Conservation 1 Crop Produce 1 Crop production 1 Crop yield 1 Cropping systems 1 Cultivars 1 Demand 1 Documentation 1 Domestication 1 Drought resistance 1 Environmental Tolerance of Plants 1 Field Crops, (New March 2000) 1 Food Economics, (New March 2000) 1 Food Processing (General) 1 Food preparation 1 Food processing 1 Food supply 1 Forage and Fodder Crops, (New March 2000) 1 Genetic improvement 1 Habit 1 Improved varieties Lens culinaris 1 Lentils 1 Mechanization 1 Molecular Biology and Molecular Genetics, (Discontinued March 2000, Reinstated and Revised June 2002) 1 Nitrogen fixation 1