Norma relacionada
Practice Relating to Rule 54. Attacks against Objects Indispensable to the Survival of the Civilian Population
Indonesia’s Military Manual (1982) states that it is prohibited to attack foodstuffs, agricultural areas, crops, livestock, drinking water installations and supplies, including irrigation works. 
Indonesia, The Basics of International Humanitarian Law, Legal Division of the Indonesian Armed Forces, 1982, p. 56, § 127(c).