TY  - BOOK
AU  - Heiserman,David L.
TI  - Experiments in four dimensions
SN  - 0830601414 (paperback)
PY  - 1983///
CY  - [S.l.]
PB  - Tab Books, Inc.
N2  - With some paper, a pencil and this book, you can actively engage in 4D adventures. The tools and ideas are presented for you to set out on your own
UR  - http://www.amazon.com/exec/obidos/ASIN/0830601414/chopaconline-20
ER  -