00796cam a22002291  4500001001300000003000400013005001700017008004100034010001700075035001900092040001800111042001200129050002200141100003800163245014100201260004700342300005000389410004500439500005300484650001200537999001700549gs 20000378 DLC20260227111324.0750430s1920    xx            000 0 eng    ags 20000378   a(OCoLC)1306266  aDLCcNhDdDLC  apremarc00aTN26b.A35 no. 311 aMcLennan, John Cunningham,d1867-10aReport on some sources of helium in the British empire,cby J. C. McLennan and associates.  Pub. by permission of the British Admiralty.  aOttawa,bJ. de L. Taché, printer,c1920.  aviii, 72 p.b4 fold. maps (in pocket)c25 cm.10aCanada.bMines Branch.tBulletinvno. 31  aAt head of title:  Canada.  Department of mines. 0aHelium.  c26032d26032