-
471
Man-environmental interactions case studies of the Masalukot upland community, 1982.
प्रकाशित 1982पुस्तक -
472
The impact of irrigation on income distribution in selected Philippine villages
प्रकाशित 1982पुस्तक -
473
-
474
-
475
-
476
-
477
-
478
-
479
-
480