Disain untuk konservasi nilai material pada kemasan plastik polipropilen kaku dalam konteks daur ulang mekanis = Design for material value conservation of rigid polypropylene plastic packaging in mechanical recycle context / Palito Joyhatigoran Endthen

Simulasi penerapan konservasi nilai material pada kemasan plastik dalam manfaat dimensi ekonomi, lingkungan, dan sosial = Simulation of material value conservation implementation on plastic packaging in the benefit of economic, social, and environmental dimensions / Ovita Elsa Wandani

Mangroves for national development and conservation in Indonesia : challenges for the future

Indonesian Journal of Conservation

Determination the location and size of each zona of regional water conservation area in central tapanuli distric / Pohan Panjaitan