Development (2) Science (2) Research (2) Investigación (2) Recherche (2) Science (2) Développement (2) Recherche (2) recherche (2) Heidelberg (1) Education (Higher) (1) Congresses (1) Congresses (1) Composition and exercises (1) Solids (1) Service industries (1) Scientists (1) Research libraries (1) Play (1) Phloem (1) Landscapes (1) Industrial arts (1) Face (1) Electronics (1) Communal living (1) Reading (1) Library (1) Libraries (1) Last years (1) Study and teaching (Higher) (1)