The name "petroleum" signifies "oil from stone."According to the classification ofMale,petroleum is included in the category of bitumens.It is an extremely complextype of mineral oil, compounded of various substances and valuable for its combustiblequalities. It is found in the earth, sometimes lying at great distances below the surface.
Tsung-Ching Chen
. Petroleum in The Far-East[J]. Acta Geographica Sinica, 1936
, 3(4)
: 783
-800
.
DOI: 10.11821/xb193604009