00594pamaa2200169 4500 0000028340 20060803090000.0 0521315581 808.042 HAM PE1128.A3 HAM 1987 HAMP-LYONS Study writing : a course in written English for academic and professional purposes Liz Hamp-Lyons and Ben Heasley. Cambridge: Cambridge University Press, 1987. vii, 168p.: ill.; 24cm. English language -- Text-books for foreign speakers English language -- Writing Heasley, Ben