Description
Item Description:Depths shown by contours and gradient tints.
Panel title.
"Phosphorite distribution derived from analyses of samples collected by G.R.V. Tangaroa (1975-78), R.V. Valdivia (1978), and R.V. Sonne (1981)."
"Not to be used for navigational purposes."
Includes reliability diagram and location map.
Cartographic material.
Physical Description:2 maps on 2 sheets : color ; on sheets 74 x 61 cm, folded to 22 x 15 cm.