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Стр. 825
... of such unstable compounds , whose presence is so greatly clouded by the natural samples in which they exist . ... most often recorded the nanogram range , an F & M gc —more than two years ago_separated a laboratory pesticide sample ...
... of such unstable compounds , whose presence is so greatly clouded by the natural samples in which they exist . ... most often recorded the nanogram range , an F & M gc —more than two years ago_separated a laboratory pesticide sample ...
Стр. 879
Samples were collected proximately 200 years and 200,000 from obsidian spires pushed above the years . ... rather than trolled by temperature ( but not humidcaldera ) sample 6G007 , 6200 + 3100 the material from the original flow .
Samples were collected proximately 200 years and 200,000 from obsidian spires pushed above the years . ... rather than trolled by temperature ( but not humidcaldera ) sample 6G007 , 6200 + 3100 the material from the original flow .
Стр. 1273
It enables the investigator to maintain precise control of sample temperature and to automatically record experimental data without ever looking away from the sample itself . The instrument operates over the range of -20 ° to + 300 ° C ...
It enables the investigator to maintain precise control of sample temperature and to automatically record experimental data without ever looking away from the sample itself . The instrument operates over the range of -20 ° to + 300 ° C ...
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acid activity American analysis animals applications areas Association behavior biology cells chairman changes chemical chemistry chromatography City College committee complete containing Department determined direct discussion effects electron experiments fact field function give given hydrogen illus important increase indicate Institute interest laboratory lead less material means measured mechanisms Medical ment metal methods Michigan nature observed occur organic percent period Physics population position possible present Press probably problems range rats recent recorded References response sample School Science scientific scientists Service sleep Society specific standard stones structure studies suggest surface Table teaching temperature tests tion United University values Washington write York