TY  - BOOK
AU  - Coe, Norman,
TI  - Grammar spectrum 3; intermediate with aswers /  Norman Coe
SN  - 0-19-431414-6
CY  - Estados Unidos de América : OXFORD
KW  - 1. INGLES 2. GRAMMAR
N1  - Verbs and tenses; modals and other verbs, infinitives and ing forms
ER  -