2 maps : color ; 62 x 70 cm. folded in envelope 31 x 23 cm + 1 text (12 pages : maps ; 28 cm.)
OCLC
ocm08816649
Cartographic Data
Scale 1:750,000
(W 87⁰00'--W 81⁰00'/N 46⁰00'--N 41⁰30')
Title from envelope.
Text includes bibliography.
Sheet 1. Bouguer gravity anomaly map, southern peninsula of Michigan; Inset: General geology map.-- Sheet 2. Total magnetic intensity anomaly map; southern peninsula of Michigan; Inset: General geology map