Plants Botany 288 Plantas 74 Evolution 73 Botanica 63 Animals 61 Periodicals 39 mehr ... Publicaciones periodicas 39 Effect of stress on 36 Plant physiology 33 History 32 Nutrition 30 Plant ecology 28 Reproduction 27 Classification 23 Disease and pest resistance 23 Environmental aspects 23 Metabolism 23 Natural history 23 Development 20 Ecology 20 Adaptation 19 Analysis 19 Flowers 18 Trees 18 Crops 17 Paleobotany 16 Phytogeography 16 Soils 15 Photosynthesis 14 weniger ...