Atrial tachycardia is a supraventricular tachycardia (SVT) that does not require the atrioventricular (AV) junction, accessory pathways, or ventricular tissue for its initiation and maintenance.
Page Content. Northern Natural Gas Company (Northern) is a subsidiary of Berkshire Hathaway Energy based in Omaha, Nebraska and has been in business since 1930. Northern owns and operates the largest interstate natural gas pipeline system in the United States.
Last Ex-Dividend Date: Mar. 15, 2017. Description: Canadian Natural Resources Ltd is a senior independent energy company. The Company is engaged in the acquisition, exploration, development, production, marketing and sale of crude oil, NGLs and natural gas.