Eckersley Essential English(original version) Book 2
ESSENTIAL ENGLISH is a course in four books, of which this is the second, for the teaching of English to adult foreign students. It aims at giving the student a sound knowledge of the essentials of both spoken and written English and taking him well on the way to a mastery of idiomatic conversational and literary English.
ESSENTIAL ENGLISH is a course in four books, of which this is the first, for the teaching of English to adult foreign students. It aims at giving the student a sound knowledge of the essentials of both spoken and written English and taking him well on the way to a mastery of idiomatic conversational and literary English.
Eckersley Essential English (original version) Book 4
REVISED EDITIONS of Books I, II and III of Essential English have already been produced; this present edition brings Book IV into line with its three companion volumes. The book has been completely overhauled; those parts that the experience of teachers and students had proved to be of interest and value have been retained, the rest has been replaced by newer and, it is hoped, more interesting, material.
Differential Equations With Boundary-Value Problems
This Fourth Edition of the expanded version of this best-selling A FIRST COURSE IN DIFFERENTIAL EQUATIONS WITH MODELING APPLICATIONS places an even greater emphasis on modeling and the use of technology in problem solving and now features more everyday applications. Both texts are identical through the first nine chapters, but this version includes six additional chapters that provide in-depth coverage of boundary-value problem-solving and partial differential equations, subjects just introduced in the shorter text.
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