M22****8663 2021-05-18 00:01 宁为玉碎的后面一开发者_高级运维句是不为瓦全。宁为玉碎，不为瓦全是一句成语。意思为宁做玉器被打碎，不做瓦器而保全。比喻宁愿为正义事业牺牲，不愿丧失气节，苟且偷生。180**
I\'m pretty new to Stata. I have a set of observation开发者_运维技巧s of the form \"CountryGDPYear\". I want to create a new variable GDP1960, which gives the GDP in 1960 of each country for each yea
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