An assessment of polybrominated diphenyl ethers (PBDEs) in sediments and bivalves of the U.S. coastal zoneKimani L. Kimbrough, Warren Edward Johnson, G. G. Lauenstein, John David Christensen, D. A. Apeti · First published 2009Open the Tome
6,000 most used Century 21 shorthand outlinesEdward L. Christensen · First published 1974Open the Tome
Correspondence instruction in the United StatesMacKenzie, Ossian Christensen, Edward L., ; Rigby, Paul H., ; American Council on Education. ; National Commission on Accrediting. · First published 1968Open the Tome
