551
E
Engel , Oscar Diedrich von , 1880-
Geomorphology systematic and regional , by O. D. von Engels ... New York , Macmillan Company , 1942 .
xxii p., 1 h. 655p.front.color. , ilus. , láms. , mapas. 24 cm.
" Bibliography " : al final de los capítulos.
" Words to which reference in made " : p.619-627.