ISBN-13: 9780415786362 / Angielski / Miękka / 2019 / 110 str.
ISBN-13: 9780415786362 / Angielski / Miękka / 2019 / 110 str.
Originally published in 1966, the two authors combined skill in their subject with experience of teaching it to students in Africa and elsewhere. Each chapter ends with suggested exercises, discussion points and reading references.