@book{UBHD-1059404, author={Betts, Edward H.}, title={Master class in watercolor}, publisher={Watson-Guptill}, address={New York}, year={1975}, pages={239 p.}, language={eng}, isbn={0-8230-3013-X and 978-0-8230-3013-2}, note={29 cm. - Includes index. - Bibliography: p. 237}, library={UB [Signatur: 77 C 1203]}, }