Except as otherwise expressly provided in sections 13a-176 to 13a-183, inclusive, all of said bonds shall be issued in accordance with § 3-20 and be sold at a price not less than the principal amount thereof plus accrued interest, and the proceeds of any sale of said bonds shall be deposited in a special fund and used and applied as is provided in said § 3-20. Pending the use or application of any such proceeds as hereinabove directed, such proceeds may be invested by the Treasurer in bonds or obligations of, or guaranteed by, the state or the United States or agencies or instrumentalities of the United States. Net earnings on investments of proceeds, accrued interest and premiums on the issuance of said bonds shall, after payment of expenses incurred by the Treasurer or State Bond Commission in connection with their issuance, if any, be deposited to the credit of the General Fund. All provisions of said § 3-20, not inconsistent with the provisions of sections 13a-176 to 13a-183, inclusive, or the exercise of any right or power granted by said sections, shall apply to all bonds authorized pursuant to said sections.