553.28
H
Hager, Dorsey, l887-
Practical oil geology, by Dorsey Hager...
5th ed. New York and London, MsGrav-Hill book company, Inc., 1938.
xix, 466 p. lllus. (incl. maps( diagrs.
19 cm.
"List of books on oil and general geology":
p. 443-448
One map accorapanied by transparent guard 
with outline dranwing and explanatory letterpres.