[Simple testing methods for environmental pollutants].
Yamayoshi
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D000393:Air Pollutants / Q000032:analysis*; D000641:Ammonia / Q000032:analysis; D002245:Carbon Dioxide / Q000032:analysis; D002248:Carbon Monoxide / Q000032:analysis; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D002713:Chlorine / Q000032:analysis; D004784:Environmental Monitoring; D005557:Formaldehyde / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
D000393:Air Pollutants; D014874:Water Pollutants, Chemical; D002245:Carbon Dioxide; D005557:Formaldehyde; D002713:Chlorine; D000641:Ammonia; D002248:Carbon Monoxide; D009584:Nitrogen