Spine title: Chemical heterogeneity in the earth's mantle.
'First published in "Philosophical Transactions of the Royal Society of London", series A, volume 297 (no.1431), pages 135-493' - title page verso.
The evidence for chemical heterogeneity in the earth's mantle : a Royal Society discussion organized by D.K. Bailey, J. Tarney and Sir Kingsley Dunham, F.R.S. on behalf of the Geochemistry Group of th. ISBN 0854031448. Published by Royal Society in 1980. Publication and catalogue information, links to buy online and reader comments.