text_combined: nan english specific purposes international journal editors dudley evans uk liz hamp lyons usa john swales usa ann n johns usa contents volume 13 1994 thomas reporting verbs medical journal articles martinez spanish english cognates subtechnical vocabulary found engineering magazine texts l bilton stylistic variations science lectures teaching vocabulary okoye teaching technical communication large classes belcher apprenticeship approach advanced academic literacy graduate students mentors amer effect knowledgemap underlining training reading comprehension scientific texts p webber function questions different medical journal genres h tahirian methodology factor teaching esp elsevier science ltd freesample elsevier co uk