TY  JOUR
TI  Historical aspects of the development of water supply and sanitation systems in the Middle Ages and their impact on the current ecological situation in developing countries
KW  Middle Ages
KW  history
KW  aqueduct
KW  well
KW  river
KW  water supply
KW  water disposal.
JO  
AU  Orlov, E.V.
AU  Shipkov, O.I.
AU  Peregudov, D.A.
PY  2017
IS  2
PB  INFRA-M Academic Publishing LLC.