/l/ Present H. B. D. values (cf. table II+8) based on veQues in cols. D, F and values 

 from Harris and Benedict, I919. /2/ Based on values from 2l+ reports in the literature. 

 Including those in cols. E,F,of this table and values from Harris and Benedict, I919. 

 /3/ The British Standard. These values constitute part of the basis for those in col.B. 



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