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7.1 A C
7.2 A
7.3 A
7.4 B D
7.5 woda
7.6 azot
8.1 azot --- C
8.2 węgiel -- B
8.3 wodór -- A
8.4 siarka --E
8.5 tlen -- D
8.6 chlor - F
9.1 syntezy
9.2 wymiany
9.3 syntezy
9.4 analizy
9.5 analizy
9.6 wymiany
9.7 wymainy