TY  - BOOK
AU  - Clark,S.E.
TI  - Learn to Invent, First Steps for Beginners Young and Old: Practical Instuction, Valuable Suggestions to Learn to Invent
PY  - 2014///
PB  - Project Gutenberg
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/45139
ER  -