author = { Allen, J. P. B. AND Widdowson, H. G. },

title = { English in physical science Teacher's ed. },

publisher = {Oxford University Press},

isbn = {0194375048},

year = {1974},

booktitle = {English in focus},

address = { London },

url = { http://slubdd.de/katalog?TN_libero_mab2 }