TY  - BOOK
AU  - Hartwigsen,Gail Lynn
TI  - Design concepts: a basic guidebook 
SN  - 0205066631
PY  - 1980///
CY  - Massachusetts
PB  - Allyn and Bacon, Inc., 
KW  - Design
KW  - theory
KW  - Instructions
KW  - Textbook
ER  -