Hình: http://www.sggp.org.vn/nhipcaubandoc/giaiquyetthubandoc/2009/8/199859/ http://www.atgt.vn/thi-cong-gay-o-nhiem-hang-loat-don-vi-bi-xu-phat-d92033.html Hình: http://afamily.vn/doi-song/tu-khong-trung-mot-sai-gon-tham-do-20150220111632819.chn thái : Urban Biodiversity and Design - Conservation Science and Practice Series no 7, : Urban Biodiversity and Design - Conservation Science and Practice Series no 7, Milan Green Network in Hamburg,