题名: | COVID-19 Effects On Cargo Are Hard To Quantify |
正文语种: | 英文 |
作者: | David Murray |
关键词: | covid-19;cargo;effects;hard;quantify |
摘要: | COVID-19 Effects On Cargo Are Hard To Quantify |
出版日期: | 202006 |
出版年: | 2020 |
期刊名称: | Waterways Journal |
卷: | Vol.134 |
期: | No.13 |
页码: | 3,13 |