00306nam a2200109Ia 450000500170000000800410001708200140005810000210007224500500009326000450014330000080018820260225051007.0260224s9999||||xx |||||||||||||| ||und||  a551.7 HOL  aDoris L. Holmes  0aHolmes Principles of physical geology 3rd ed.  aThe English Language Book Society c1938  a730