Tools and Tillage. A Journal on the History of the Implements of Cultivation and other Agricultural Processes. Edited by Axel Steensberg, Alexander Fenton and Grith Lerche. Copenhagen, G. E. C. Gad. Vol. 1:1.1968. 64 ss. Hl. Subskription 3 $.

Gissel, S. (1970). Tools and Tillage. A Journal on the History of the Implements of Cultivation and other Agricultural Processes. Edited by Axel Steensberg, Alexander Fenton and Grith Lerche. Copenhagen, G. E. C. Gad. Vol. 1:1.1968. 64 ss. Hl. Subskription 3 $. Historisk Tidsskrift, 12. Hentet fra https://tidsskrift.dk/historisktidsskrift/article/view/51039