Johnson Norman L Combinatorics of spreads and parallelisms. - Boca Raton CRC Press 2010 - xxi,651p. cm. ISBN: 9825.9899999999998 Standard No.: 112678 Source: 1550, 18/10/2011, Kiran Book Service Textual Subjects--Topical Terms: Mathematics Dewey Class. No.: B3166, Q0