|
1
|
|
|
|
GB53
.S8
|
Physical geography
|
New York, [ United States ] : John Wiley and Sons , 1951
|
Strahler, Arthur N
|
|
6560
|
|
2
|
|
|
|
QE26.2
.S8
|
Planet earth : its physical systems through geological time
|
New York, [ United States ] : Harper and Row Publishers , 1972
|
Strahler, Arthur N
|
|
7862
|