VESTBERG, M., M. CARDOSO, and A. MÅRTENSSON. “Occurrence of Arbuscular Mycorrhizal Fungi in Different Cropping Systems at Cochabamba, Bolivia (Research Note)”. Agricultural and Food Science 8, no. 3 (January 3, 1999): 309–318. Accessed May 6, 2024. https://journal.fi/afs/article/view/5630.