共 50 条
- [42] Agricultural mechanization in the 21st Century [J]. Resource: Engineering and Technology for Sustainable World, 2020, 27 (02):
- [45] Agricultural policy for the 21st century [J]. AGRICULTURAL ECONOMICS, 2004, 31 (01) : 109 - 110
- [46] Developing sustainable agricultural production systems for the 21st century [J]. Resource: Engineering & Technology for Sustainable World, 1996, 3 (01):
- [47] Perspective for the 21st century - Overview [J]. ZEITSCHRIFT FUR KARDIOLOGIE, 1996, 85 : 143 - 145
- [50] NETWORK SECURITY IN THE 21ST CENTURY [J]. JOURNAL OF THE INSTITUTE OF TELECOMMUNICATIONS PROFESSIONALS, 2013, 7 : 26 - 29