00311nam a2200109 a 450000500170000002000150001708200160003210000190004824500730006726000400014030000210018020251203090704.0  a8170410444  a503.21bENC  aChhatwal, G.R.  aEncyclopedia of Scientific and Technical Terms; vol. VIIIbGeography  aNew DelhibAnmol Publicationsc1987  a378p.c22 cm. HB