Datta, R.L.
Soap-making reverse graining in the manufacture of washing soap by R.L. Datta - Calcutta Bengal Secretariat Book 1933 - 8p.
T2x5412
Soap-making reverse graining in the manufacture of washing soap by R.L. Datta - Calcutta Bengal Secretariat Book 1933 - 8p.
T2x5412
