TY  - BOOK
AU  - Perry,Clarence Arthur
TI  - Significant school extension records: how to secure them 
T2  - Bulletin / Dept. of the Interior, Office of Education
AV  - L111 .A6 1915, no. 41
U1  - 370.6173 
PY  - 1915///
CY  - Washington
PB  - G.P.O.
KW  - School facilities
KW  - Extended use
KW  - United States
KW  - Statistics
N1  - Copies 1 and 2 of L111.A6 with: Mathematics in the lower and middle commercial and industrial schools of various countries represented in the International Commission on the Teaching of Mathematics / E.H. Taylor. Washington : Govt. Print. Off., 1915. Bound together subsequent to publication
ER  -