TY  - BOOK
AU  - Senécal,C.O.
TI  - Colour printing of geological maps
T2  - Bulletin ; no. 39
AV  - QH1 .C13 no. 39
PY  - 1925///
CY  - Ottawa
PB  - F.A. Acland, printer
KW  - Geology
KW  - Maps
KW  - Cartography
N1  - At head of title: Canada. Department of Mines; "March 14, 1925."; Includes bibliographical references
ER  -