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Fluctuatio 



ns of Menthol prices = 



- Peppermint oil prices = 



from 1901 to 1914 1 ) 

 lculated in L. s. d. and Yen per ki 



O : nominal quotations. 



• : actual business transactions, 

 es in the first column on the left 

 production of Peppermint Oil in k 



agram was elaborated by K. Koisayashi and 

 al by this gentleman. 



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