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	1.	[Use of mass spectrum analysis for structure elucidation of alkaloids. X. New alkaloids from Erythrophleum guineense and about Muawin]. [electronic resource] by Friedrich-Fiechtl, J Spiteller, G Producer: 19720221 In: Chemische Berichte vol. 104 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	[Demonstration and identification of tetrahydrocannabinol in biological fluids]. [electronic resource] by Friedrich-Fiechtl, J Spiteller, G Just, W W Werner, G Wiechmann, M Producer: 19730806 In: Die Naturwissenschaften vol. 60 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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