發送短信

數:

提供者:

CAPTCHA:

 ______    __   __    _____     _____     _____   
|      \\  \ \\/ //  |__  //   |  ___||  /  ___|| 
|  --  //   \ ` //     / //    | ||__   | // __   
|  --  \\    | ||     / //__   | ||__   | \\_\ || 
|______//    |_||    /_____||  |_____||  \____//  
`------`     `-`'    `-----`   `-----`    `---`

Please enter what you see:

發送短信 : Institutional and country level determinants of vertical integration: New evidence from the oil and gas industry