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Postiwyd: Sad 13 Meh 2009 12:58 pm
"Yn ystod y cyfnod o gwmpas 18,000 cc......" Ydy "cc" yr un â "ce" yn Saesneg? Efallai "cyfnod Cristnogol"?
Hazel a ddywedodd:"Yn ystod y cyfnod o gwmpas 18,000 cc......" Ydy "cc" yr un â "ce" yn Saesneg? Efallai "cyfnod Cristnogol"?
n the United States, the usage of the BCE/CE notation in textbooks is growing.[51] Some publications have moved over to using it exclusively. For example, the 2007 World Almanac was the first edition to switch over to the BCE/CE usage, ending a 138-year usage of the traditional BC/AD dating system.