Environmental systems :
White i.d.
Environmental systems : an introductry text. - ed. - New york : Chapman, 1984. - 495 p. : ill ; cm.
index.
$
environmental systems--geography.
Environmental systems : an introductry text. - ed. - New york : Chapman, 1984. - 495 p. : ill ; cm.
index.
$
environmental systems--geography.