Bonds shall be sold for at least par value. Before making any sales, the board of directors of the district shall, by resolution entered on its minutes, declare its intention to sell a specified amount of bonds, and the day, hour, and place at which bids will be received for such bonds. Notice of the sale shall be given by publication, once, not less than 10 days prior to the date of sale, in a newspaper of general circulation in the district and shall state that sealed proposals for the purchase of bonds will be received at the place designated for the receipt of bids until the day and hour named in the resolution.