00298nam a2200109Ia 450000500170000000800410001708200140005810000250007224500360009726000470013330000080018020260225050922.0260224s9999||||xx |||||||||||||| ||und||  a551.3 NBF  aNat. Book Foundation 0aDictionary of geological terms   aIslamabad: National Book Foundation c1957  a545