ISBN-13: 9789061912064 / Angielski / Twarda / 1981 / 608 str.
ISBN-13: 9789061912064 / Angielski / Twarda / 1981 / 608 str.
‘Weak Rock - Soft, Fractured and Weathered Rock’, includes Volume. 1 of 3 of the Proceedings of the International Symposium on Weak Rock held in Tokyo on the 21-24 September 1981.