A collection of 25 Speleological and Karstological publications from the 30th Anniversary Symposium of the Speleological Society of Cuba, including No.7 (Program, Papers Presented & Speeches.), No.8 (Speech by Antonio Nuñez Jiménez., No.9 (The Archaeological Site of Soroa, Pinar del Rio.), No.10 (Excavations at Funche Cave, Guanahacabibes, Pinar del Rio, Part 1), No.11 (Excavations at Funche Cave, Guanahacabibes, Pinar del Rio, Part 2), No.12 (Excavations at Funche Cave, Guanahacabibes, Pinar del Rio, Part 3), No.13 (La Santa Cave), No.14 (Gas Cave), No.15 (the Waters of Cayo Caguanes), No.16 (Pictographic Caguanes), No.17 (Air circulation in the main Caguanes cave), No.18 (new opilionids of the family Phalangodidae in Cuba), No.19 (The western coastal plain of Pinar del Rio), No.20 (Contribution to the study of tremagmites or hollow "stalagmites"), No.21 (Vertical phreatic caves of the Sierra de Cubitas), No.23 (Speleometeorology in Cuba), No.25 (Meteorological Study of the Cave of Los Masajes, Siboney, Oriente), No.25 (Methodology of work in underground sediments), No.27 (Speleological archaeology of Cuba), No.28 (Speleological bibliography of Cuba), No.29 (Speleological study of the Güines Dam area), No.30 (Underground system of Punta Judas), and No.31 (Geological engineering study of the Cuban karst).