(a) Salaries, wages and necessary travel and other expenses of employees while on official duty.
(b) The purchase of necessary equipment, materials and supplies.
(c) Other expenses necessary to the carrying out of such inspection and certification.
(2) The expenditures shall be made in accordance with the usual disbursement of receipts of the cooperative agricultural extension service. [Amended by 1955 c.379 §11; 2007 c.281 §9]