(K) 1939. Bulldozer at work on the irrigation canal that was to tap the Siluay River in Lagao Souther Koronadal NLSA-AGSL
(K) 1939. Bulldozer at work on the irrigation canal that was to tap the Siluay River in Lagao Souther Koronadal NLSA-AGSL
(K) 1939. Bulldozer at work on the irrigation canal that was to tap the Siluay River in Lagao Souther Koronadal NLSA-AGSL