Programme of section B (chemistry) for t
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Article
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1936
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Wiley (John Wiley & Sons)
⚖ 143 KB
## INDUSTRY G13 nii iiitcrcstiiig wny. It wns foiiiid tlint tlic Pcrininii geologicnl forinations in thrit district were very similar to those of the UriiI-1Siiibn region, mid to those of Tesns rind Loirisiiiiiii. Pollowiiig tliis, rock srii~iplcs from lioiiiiiy showed tlic csistciice of nsplirilt