节能的效果好 Jieneng de xiaoguo hao Designer Wang Yaonan (王耀南) Date 1981 Publisher Kexue puji chubanshe (科学普及出版社) Size 77x53 cm. Call nr. BG E37/662 Collection Landsberger collection Notes From series Energy conservancy science popularization wall charts (节能科普挂图), published in 1981. Amounts of surplus energy when reducing energy use by one tonne of coal. Theme Environment
