551
E
Engel , Oscar Diedich von ,1880-
Geomorphology aystenetic 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.
" Works to which  reference in made " ; p.619-627.