AccessScience : McGraw-Hill encyclopedia of science & technology online
Blackwell's concise encyclopedia of ecology / editor Peter Calow
Cambridge Encyclopedia of Darwin and Evolutionary Thought / editor Michael Ruse
Culture of animal cells : a manual of basic technique and specialized applications /Freshney, R. Ian
Dictionary of ecodesign /Yeang, Ken
Dictionary of environmental history / Ian Whyte
Encyclopedia of biodiversity / editor, Simon Asher Levin
Encyclopedia of biological chemistry / editors, William J. Lennarz and M. Daniel Lane
Encyclopedia of biostatistics / editors, Peter Armitage, Theodore Colton
Encyclopedia of communication and information / editor Schement, Jorge Reina
Encyclopedia of ecology / editor Sven Erik Jørgensen
Encyclopedia of environment and society / editor Paul Robbins
Encyclopedia of geography / editor Barney Warf
Encyclopedia of GIS / editors Shashi Shekhar, Hui Xiong
Encyclopedia of global change / editors David Cuff and Andrew S. Goudie
Encyclopedia of global warming and climate change / editor S. George Philander
Encyclopedia of human geography / editor Barney Warf
Encyclopedia of Inland Waters / editor Gene E. Likens
Encyclopedia of science, technology, and ethics / editor Carl Mitcham
Encyclopaedia of the history of science, technology, and medicine in non-western cultures / editor Helaine Selin
Environmental toxicology / editor
Handbook of risk theory editor Sabine Roeser
Handbook of water analysis / edited by Leo M. L. Nollet
International encyclopedia of human geography / editors Nigel Thrift, Rob Kitchin
Landguiden : länder i fickformat Online
NE.se
Sustainable food production / editor Paul Christou
Water encyclopedia / Jay Lehr (editor in chief), Jack Keeley (senior editor)