Economics of transportation
Articles in SafetyLit
Y-Axis = Volume :: X-Axis = Issue
?=unknown status :: X=no issue published :: nn=articles from issue :: A=relevant article(s) IDed to add
S=searched, nothing relevant :: O=issue published but not yet searched :: C=combination issue
| | | | | |
| 1 (2012) | X | 3 | C | S | S |
| 2 (2013) | X | ? | 1 | C | 1 |
| 3 (2014) | X | ? | 2 | S | S |
| 4 (2015) | X | S | S | 1 | 1 |
| 5 (2016) | S | X | X | X | X |
| 6 (2016) | S | X | X | X | X |
| 7-8 (2016) | 2 | ? | ? | ? | ? |
| 10 (2017) | 1 | ? | ? | ? | ? |
| 11-12 (2017) | 1 | ? | ? | ? | ? |
| 13 (2018) | 1 | ? | ? | ? | ? |
| 14 (2018) | 1 | ? | ? | ? | ? |
| 18 (2019) | 1 | ? | ? | ? | ? |
| 20 (2019) | 2 | ? | ? | ? | ? |