http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Enviromental best management practices for aquaculture ; Edited by Craig S. Tucker and John A. Hargreaves
Περιλαμβάνει βιβλιογραφίες και ευρετήριο.
Best management practices (Pollution prevention)