00366nam a22001217a 4500008004100000040005500041080001500096100002100111245004300132260004200175300001500217650001200232230525b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a551.7 bK0  aWaller, J Marvin  aStratigraphic Principles and practice   aDelhi: bUniversal Book Stall, c1960  axvi, 725p.  aScience