Iyashi to iyarashi
Subtitle: erosu no bunka jinruigaku
By: Tanaka Masakazu
Edition: Shohan
Series: Sōsho zero; Sōsho zero
Publisher: Chikuma Shobō
Published: 2010
Place of publication: Tōkyō
Language: jpn
Number of pages: 238
ISBN-13: 9784480857958
Subjects: Sex customs; Erotica; Pornography