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PROSPECTING AND EXPLORATION Drake's original well was drilled close to a
known surface seepage of crude oil, and for many years such seepages were the
only reliable indicators of the presence of oil. As demand grew, however, new ...
The nonprinting areas must be etched sufficiently deep to prevent the ink rollers
from touching them on the press, and to prevent them from rubbing on the surface
of the paper during wet colour printing. For presses with accurately adjustable ...
The stencil is placed on the already inked plate and the colour is rolled onto the
surface of the plate using a gelatin or soft rubber roller. For surface rolling,
regular artist oil colours can be used. The use of stencils allows a great number
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The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review