酒田-村上海域空中磁気図 = Total intensity aeromagnetic map off the coast of Sakata-Murakami area ; 村上-弥彦海域空中磁気図 = Total intensity aeromagnetic map off the coast of Murakami-Yahiko area ; 弥彦-糸魚川海域空中磁気図 = Total intensity aeromagnetic map off the coast of Yahiko-Itoigawa area / 地質調査所 [編]. -- 地質調査所, 1972. -- (空中磁気図 = Total intensity aeromagnetic maps ; 1, 1-1,2,3). a.