Series: Fun and Sleepless Nights / Scary and Sleepless Nights - 10 Books (6 in the Math Series) Fun and Sleepless Nights: Math - Susumu Sakurai Super Fun and Sleepless Nights: Math - Susumu Sakurai Super-Duper Fun and Sleepless Nights: Math - Susumu Sakurai Fun and Sleepless Nights: Math Premium - Susumu Sakurai Fun and Sleepless Nights: Math BEST - Susumu Sakurai Fun and Sleepless Nights: Math Final - Susumu Sakurai Fun and Sleepless Nights: Earth Science - Takeo Samaki Fun and Sleepless Nights: Chemistry - Takeo Samaki Fun and Sleepless Nights: Genetics - Kaoru Takeuchi, Atsushi Maruyama Scary and Sleepless Nights: Science - Kaoru Takeuchi While there are no major stains or tears, these items have been stored at home and may have some minor scratches or yellowing. Please understand that these are used items before purchasing. Individual sales are not available. Immediate purchase is possible.