. "0"^^ . . . "nitrification"^^ . . . "0"^^ . "113521873"^^ . . "13521873-n"^^ . "112758255"@en-us . . "the chemical process in which a nitro group is added to an organic compound (or substituted for another group in an organic compound)"@en-us . "nitrification"@en-us . . . .