CRC handbook of chemistry and physics:    a ready reference book of chemical and physical data /  
editor-in-chief , Robert C. Weast; asso ciate editors, Melvin J. Astle, William H. Beyer 
 - 68th ed. 
 - Boca Raton :    CRC Press,    1987 
 - 1v. (various pagings) p. :    ill. ;    26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0849304687 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Chemistry -- Tables -- Periodicals.<br/> Physics -- Tables -- Periodicals.
<br/><br/><label>Dewey Class. No.: </label>540