Chemistry 5 Mathematics 5 Physics 3 39.00 astronomy: general 2 Astrofysica 2 Biochemistry 2 Chemie 2 Chemistry, Organic 2 Chemistry, Physical 2 Chemistry, Physical and theoretical 2 Microbiologie 2 Microbiology 2 Wiskunde 2 Zeitschrift 2 31.00 mathematics: general 1 31.44 ordinary differential equations 1 31.45 partial differential equations 1 31.81 mathematical physiscs 1 33.95 astrophysics 1 35.00 chemistry: general 1 35.10 physical chemistry: general 1 35.50 organic chemistry: general 1 Algebra 1 Algebraic logic 1 Analyse fonctionnelle 1 Analyse spectrale 1 Astronautics 1 Astronautics in geophysics 1 Astronomy 1 Astrophysics 1