Trik Dan Tip berhitung Yang lebih Cepat

by Ervina Yudha kusuma, S.S
Published 2003

Berapakah Berat Bumi?

by Ervina Yudha Kusuma, S.S., Marshall Brain
Published

Seri Matematika : Keterampilan Aljabar I

by Ervina Yudha Kusuma, S.S., Jerry Bobrow, Ph.D, Sherly Suminto
Published 2003

Seri Matematika: Keterampilan Geometri

by Ervina Yudha Kusuma, S.S., Kalbudiyanta, Ed Kohn, M.S., Arta Argisa
Published 2003

Strategi Memenangkan Lomba Proyek Penelitian Ilmu Pengetahuan

by Joyce Henderson, Heather Tomasello, Ervina Yudha Kusuma, Puspita Wikisari, S.S.
Published 2003

Mempelajari Indera

by Ervina Yudha Kusuma, S.S., Ir. Rudiyanto, M.A., B. Waluyo, Artha Argisa, Rebecca Treays
Published 2004

Ekologi

by Ervina Yudha Kusuma, S.S., Ir.Rudiyanto, MA, B. Waluyo, Rio Kuswanto, Richard Spurgeon, Corinne Stockley, Stephen Wright
Published 2004

A + Proyek-Proyek Biologi

by Ervina Yudha Kusuma, S.S., Ir.Rudiyanto, MA, B. Waluyo, Janice Van Cleave, Ir. Indriyati Wibisono, M.P., Kalbudiyanta
Published 2004

Ensiklopedia Tanya & Jawab : Keliling Dunia

by Ervina Yudha Kusuma, S.S., Ir. Rudiyanto, M.A., Brian Williams, B. Waluyo, Deni Sarjoko, Nunung Suparna, Endang Naskah Alimah, S.S.
Published 2005

Seri Matematika: Keterampilan Statistika

by Ervina Yudha Kusuma, S.S., Ir. Rudiyanto, M.A., David H. Voelker, M.A., Peter Z. Orton, Ed. M., Scott V. Adams
Published 2004

Percobaan-Percobaan Sains (Fisika, Kimia, Biologi) dengan Peralatan Sederhana

by Ervina Yudha Kusuma, S.S., Ir. Rudiyanto, M.A., Jane Bingham, Christopher Rawson, Susie McCaffrey, Rebecca Heddle, Dra. Yuni Astuti, Nunung Suparna
Published 2004

A + Proyek-Proyek Astronomi

by Ir. Rudiyanto, M.A., B. Waluyo, Janice Van Cleave, Nunung Suparna, Ervina Yudha Kusuma, S.S, Endang Naskah Alimah, S.S., Sri Mintarjo, S.Si.
Published 2004

Aljabar For Dummies

by Ervina Yudha Kusuma, S.S., Nunung Suparna, Endang Naskah Alimah, S.S., Rizka Yanuarti, S.S., Rachma Apsari, A.Md., Yuanin Anggraeni, A.Md., Mary Jane Sterling, Evi Janu Kusumawati, S.S.
Published 2005