Salle.J.L. & Lefschetz.S. Stability By Liapunovs Direct Method With Appli. - 1st Ed. - Allied Publishers Limited 1975 - 134p. 24 cm. Text in English Subjects--Facted Index Terms: MECH Index Terms--Genre/Form: M-36 Dewey Class. No.: 24D-1814 / SAL