http://www.legislation.gov.uk/nisr/1991/540/schedule/2/crossheading/determination-of-total-nitrogen-in-calcium-cyanamide-in-the-presence-of-nitrate/paragraph/4.12/made

The Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1991

Local Government

Government Printer for Northern Ireland

2016-09-06

AGRICULTURE