@base . a ; "1351-9158" ; . a . , ; "˜The œEntec directory of environmental technology /" ; ; ; ; ; "˜The œEntec directory of environmental technology /" , "ENTEC directory of environmental technology (European ed.)" . . a , ; "ENTEC directory of environmental technology (European ed.)" . a ; "20230223073441.416121"^^ ; ; .