00750cam a22002171  4500001001300000003000400013005001700017008004100034010001700075035001900092040004400111050001500155100004500170245012000215260002500335300003200360504003100392650001300423650001100436700008500447gs 37000221 DLC20260227111342.0820909s1936    iauab    b    000 0 eng c  ags 37000221   a(OCoLC)8758186  aU.S. Geol. survey.  Library.cCU-AdDLC00aQE33b.S571 aSmith, John E.q(John Eliphalet),d1878-10aLesson helps in agricultral geology,bfor use with Emerson's Agricultural geology (Wiley & sons)cby John E. Smith.  a[Ames, Iowa?]c1936.  a48 p.billus. (map)c23 cm.  a"References": p. 8, 42-43. 0aGeology. 0aSoils.1 aEmerson, Frederick V.q(Frederick Valentine),d1871-1919.tAgricultural geology.