The three norths
By: Alexander R. Grime
Contributors: Morton, Stan
Series: Map concepts and skills topographic map series -- 5; Map concepts and skills topographic map series -- 5
Publisher: Longview House
Published: 1978
Place of publication: Bath, Ont
Language: eng
Number of pages: 11
Description: Suitable for use in schools. Defines true north, grid north and magnetic north.