00728cam a22002291  4500001001300000003000400013005001700017008004100034010001700075035001900092040004600111042001200157050001500169110003800184245007800222260004800300300005100348650001000399650002300409700003000432700003600462gs 15000836 DLC20260227111318.0790215s1915    xx            000 0 eng c  ags 15000836   a(OCoLC)4659303  aU.S. Geol. Survey. Libr.cOCldOCoLCdDLC  apremarc00aTP755b.C31 aCanada.bMines Branch (1901-1936)10aProducts and by-products of coal,cby Edgar Stansfield, and F. E. Carter.  aOttawa,bGovernment printing bureau,c1915.  avi p., 1 l., 51 p.bfold. tab., diagr.c25 cm. 0aCoal. 0aCoal-tar products.1 aStansfield, Edgar,d1878-1 aCarter, Frederic Edward,d1886-