Title of article :
The study of mineral matter in coal
Author/Authors :
Lessing، نويسنده , , R.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Abstract :
The importance of determining the character of the mineral matter, or “dirt,” in coal is explained in this paper by Dr. Lessing, who has made a special study of the problem.
