Knapp, Brian, 1946- Challenge of the human environment / B.J. Knapp, S.R.J. Ross and D.L.R. McCrae - London : Longman Group, 1989 - 272 p. : ill. ; 24 cm. - Longman advanced geography . 'Book is the second in a three volume series' - preface ISBN: 0582016371 RM54.99 Subjects--Topical Terms: Human geography