by Pauline M. Rojas and staff ; English section [: Charles C. Fries], Department of education, San Juan, Puerto Rico

Heath , Charles E. Tuttle Co. 1967, c1952

Book 1 , Book 2 , Book 3 , Book 4 , Book 5 , Book 6

Available at 29 libraries

by the English section, curriculum division, department of education, commonwealth of Puerto Rico

D.C. Heath c1965- American English series

1 , 2

Available at 1 libraries

by Pauline M. Rojas and staff ; English section, Department of Education, San Juan, Puerto Rico

D.C. Heath c1952-c1957 Fries American English series : for the study of English as a second language / by Pauline M. Rojas and staff, English section, Department of Education, San Juan, Puerto Rico ; [illustrated by Roger H. Martin, Jr.]

Books 1-2 , Book 3 , Book 4 , Book 5 , Book 6

Available at 27 libraries