A procedure for the reconstitution of humus (Machine-translation by Google Translate, not legally binding)
ES222236A1
A procedure for the preparation of a humic fertilizer from the residual juices of annual vegetable pastes (Machine-translation by Google Translate, not legally binding)
ES220292A1
A procedure and apparatus for the neutrlization by ammonia in the manufacture of complex fertilizers (Machine-translation by Google Translate, not legally binding)
IE20351L
Peat fertiliser
DE926187C
Process for the production of non-hygroscopic multi-component fertilizers
DE819684C
Contact furnace for carrying out exothermic reactions under pressure, especially for the conversion of carbon oxide
GB655938A
Process for directly obtaining non-hygroscopic fertilizers
GB594733A
Contact tower for the catalytic conversion under pressure of gases
