v.28: Iss.1: no.321 (2020: Jan.)

v.28: Iss.2: no.322 (2020: Feb.)

v.28: Iss.3: no.323 (2020: Mar.)

v.28: Iss.4: no.324 (2020: Apr.)

v.28: Iss.5: no.325 (2020: May)

v.28: Iss.6: no.326 (2020: June)

v.28: Iss.7: no.327 (2020: July)

v.28: Iss.8: no.328 (2020: Aug.)

v.28: Iss.9: no.329 (2020: Sept.)

v.28: Iss.10: no.330 (2020: Oct.)

v.28: Iss.11: no.331 (2020: Nov.)

v.28: Iss.12: no.332 (2020: Dec.)