1900TPH зүлгүүрийн машин. EKV Zemlja . ... It was founded following an informal meeting of 18 environmental advoes, including Bowdoin College professor John Rensenbrink and others in Augusta, Maine in January 1984. ... элс, цемент, олон материал бүхий тоосго гэх мэтийг ашигладаг ...