| 21. | He led the team that surveyed the Circum-Baikal Railway, and published textbooks on physical geology and on petrography.
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| 22. | He also esteems the article on Andean civilizations, while deeming the volume on the circum-Caribbean groups the weakest.
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| 23. | Of primary importance is the circum-peninsular trade route that linked the southeast Maya area to the Gulf coast of Mexico.
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| 24. | For this event the Baikal station was reconstructed, in which an exhibit was opened, devoted to the Circum-Baikal.
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| 25. | Although the Antarctic scallop has a circum-polar distribution, this is very disjunct, and overall it is not common.
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| 26. | Adhemar predicted the Antarctic ice sheet and theorised about its thickness by comparing the depths of the Arctic and circum-Antarctic oceans.
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| 27. | Several countries collaborate in the survey providing vessels to tow Continuous Plankton Recorders ( CPRs ) in a near circum-Antarctic survey.
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| 28. | This arrangement means the brain, sub-pharyngeal ganglia and the circum-pharyngeal connectives form a nerve ring around the pharynx.
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| 29. | It is a northeast extension of the Circum-Superior Belt and is terminated to the south by the Grenville Front Tectonic Zone.
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| 30. | This toad previously attributed to the " mitochondrial haplotype differing in this respect from all other circum-Mediterranean green toad species.
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