na INLIS000000000003501 20240122100536 ta 240122 0 eng 0-582-48692-0 0010-0124000010 631.4 631.4 MOR t Morgan Topics in applied geography soil erosion / R.P.C. Morgan Cet. I London : Longman Group Limited, 1979 113p. : ilus. ; 24cm di Rak Pertanian Morgan Tanah 1161/BBDAPTHT/B/04