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1
by Brekhovskikh, Leonid M., Lysanov, Yury P.
Published 1991
Springer Berlin Heidelberg
“...As man turns his attention from the overcrowded continents of this planet and explores...”
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2
by Brekhovskikh, L., Lysanov, Y.
Published 1982
Springer Berlin Heidelberg
“...The continents of our planet have already been exploited to a great extent. Therefore man...”