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Substrata
[,sʌb'strætɚ]
Definition
(
pl.
) of Substratum
Typed by Elvin
Examples
It
took
into
account
the
collieries,
mines
, canals, marshes, fens,
and
the
varieties
of
soil
in
relation
to
the
substrata
.
Walter Libby.
An Introduction to the History of Science
.
Typed by Elvin
