Proceedings of the 1st International Symposium on Intelligent Information Technology in Agriculture (ISIITA) Price:100RMB   Proceedings of the 2nd International Symposium on Intelligent Information Technology in Agriculture (ISIITA) Price:100RMB         Proceedings of the 3rd International Symposium on Intelligent Information Technology in Agriculture (ISIITA) Price:100RMB   Proceedings of the 4th International Symposium on Intelligent Information Technology in Agriculture (ISIITA)Price:140RMB