Physical description
A. Coloured geological survey map of Geelong area: showing sedimentary and igneous rock formations and contours. B. Coloured geological survey map of Portarlington, Victoria. By Dept. Of Mines, Melbourne. Scale 1 Mile to 1 inch
A. Coloured geological survey map of Geelong area: showing sedimentary and igneous rock formations and contours. B. Coloured geological survey map of Portarlington, Victoria. By Dept. Of Mines, Melbourne. Scale 1 Mile to 1 inch