00814cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040004800111042001200159050002400171082001100195100003700206245010500243260002000348300004400368410007000412650001200482650001400494700003500508999001700543gs 47000284 DLC20260227111353.0780515s1947    nmua          000 0 eng c  ags 47000284   a(OCoLC)3895618  aU. S. Geological Survey. LibrarycTxEUdDLC  apremarc00aTN24.N6bA232 no.28  a553.691 aClippinger, Donn Merrell,d1915-10aPumice aggregate in New Mexico;bits uses and potentialities,cDonn M. Clippinger and Walter E. Gay.  aSocorro,c1947.  a56 p.billus., plates (2 fold.)c23 cm.10aNew Mexico.bBureau of Mines and Mineral Resources.tBulletinv28 0aPumice. 0aConcrete.1 aGay, Walter E.,ejoint author.  c28197d28197