Appell, Herbert R.
Conversion of urban refuse to oil (BM-TPR 25) Appell, Herbert R. - Washington Bureau of mines 1970
CONVERSION DE DESECHOS
PETROLEO
622
Conversion of urban refuse to oil (BM-TPR 25) Appell, Herbert R. - Washington Bureau of mines 1970
CONVERSION DE DESECHOS
PETROLEO
622