Dear Ciara,

last year Boettcher et al. and Heinrichs et al. published papers on
the application and development of a high pressure apparatus to
extract soil solutions from fresh soil samples.

Good luck
Michael

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Dr. Michael E. Boettcher
Department of Biogeochemistry
Max-Planck-Institute of Marine Microbiology
Celsiusstr.1
D-28359 Bremen
FRG