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	1.	Excretion of codeine and morphine following ingestion of poppy seeds. [electronic resource] by Struempler, R E Producer: 19870805 In: Journal of analytical toxicology vol. 11 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Excretion of morphine in urine following the ingestion of poppy seeds. [electronic resource] by Struempler, R E Producer: 19881130 In: Military medicine vol. 153 Availability: No items available. Save to lists Add to cart (remove)
	3.	Hair mineral analysis and disruptive behavior in clinically normal young men. [electronic resource] by Struempler, R E Larson, G E Rimland, B Producer: 19860305 In: Journal of learning disabilities vol. 18 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	A positive cannabinoids workplace drug test following the ingestion of commercially available hemp seed oil. [electronic resource] by Struempler, R E Nelson, G Urry, F M Producer: 19970918 In: Journal of analytical toxicology vol. 21 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Nitrite adulteration of workplace urine drug-testing specimens. I. Sources and associated concentrations of nitrite in urine and distinction between natural sources and adulteration. [electronic resource] by Urry, F M Komaromy-Hiller, G Staley, B Crockett, D K Kushnir, M Nelson, G Struempler, R E Producer: 19980515 In: Journal of analytical toxicology vol. 22 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)