Nielsen, N. Norby <br/><br/>
Tokachi-oki earthquake, Japan, may.16, 1968: a preliminary -report on damage to structures / by N. Norby Nielsen and Ky-oji Nakagawa 

 - [Tokio, Japón] : ering 
 - [69] p. 
 - IISEE earthquake report ; no.2 .