The power herein granted to issue bonds shall be supplemental to and not amendatory of the provisions of all other laws, and shall be in addition to and independent of the authority granted to certain municipalities by Kan. Stat. Ann. §§ 10-1201 to 10-1212, inclusive, 13-1238 to 13-1245, inclusive, and 13-1252 to 13-1264, inclusive, and acts amendatory thereof or supplemental thereto.