Leonard De Vries | Bookhype

Dec 15, 2002

Cover of Bygone Days

Sep 14, 1995

Cover of History as Hot News

History as Hot News

Oct 16, 1986

Cover of 101 Amazing Experiments

101 Amazing Experiments

Mar 1967

Cover of Venus Unmasked

Dec 1964

Cover of Land is Bright

21 Jul 1972

Cover of Book of Experiments

Book of Experiments (Carousel Books)