Heinrich, E.W.: Microscopic Petrography. McGraw-Hill Series in the geological Sciences. New York, London 1956. 296 sider, 70 fig.

Hansen., K. (1957). Heinrich, E.W.: Microscopic Petrography. McGraw-Hill Series in the geological Sciences. New York, London 1956. 296 sider, 70 fig. Geografisk Tidsskrift, 56. Hentet fra https://tidsskrift.dk/geografisktidsskrift/article/view/46307