000
00304nam a2200121Ia 4500
008
221001s1957 xx 000 0 eng d
082
_a
551.7 DUN
100
_a
Dunbar, Carl O.
245
0
_a
Principles of stratigraphy
260
_a
New York
_b
John Wiley
_c
1957
300
_a
viii, 356p.
942
_2
ddc
_c
BK
999
_c
28917
_d
28917