Book 2, unit 13 WASTE DISPOSAL ---https://quizlet.com/_1sxnpv
Book 3, unit 10 MINING and the ENVIRONMENT --- Polish - English, Definitions
Book 3, unit 12 HEALTH HAZARDS 1 --- Polish - English, Definitions
Book 3, unit 13 HEALTH HAZARDS 2 --- Definitions, English - Polish
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