00693cam a22002291 4500001001300000003000400013005001700017008004100034010001700075035002000092040002600112042001200138050002300150051001700173100004200190245002600232260007600258300001800334650003200352810006200384999001700446e 48000011 DLC20260227111233.0821210s1948 dcu 000 0 eng  ae 48000011  a(OCoLC)16764230 aDLCcOrPSdOCoLCdDLC apremarc00aL111b.A75 no. 104 aLB3243b.H271 aHamon, Ray L.q(Ray Laforest),d1895-10aLighting schoolrooms. a[Washington]bFederal Security Agency, U.S. Office of Educationc[1948] a17 p.c23 cm. 0aSchool buildingsxLighting.1 aUnited States.bOffice of Education.tPamphlet.vno. 104. c22076d22076