@article{1019901,
author = "Karl Hans Wedepohl",
abstract = "In MERIAN, E. (ed.) Metals and Their Compounds in the Environment Ch. I, 1. Verlag Chemie, Weinheim 1990",
title = "{T}he composition of the upper {E}arth's crust and the natural cycles of selected metals. {M}etals in natural raw materials. {N}atural resources",
year = "1990",
}