Secondary school teaching and educational psychology/David Galloway and Anne Edwards Secondary school teaching and educational psychology / David Galloway and Anne Edwards Membantu anak memahami matematika / Roy dan Mary Edwards; alih bahasa, Bambang Sumantri Wildlife conservation evaluation/ Edited by Michael B. Usher Teknik fotografi di alam bebas /penyusun Tamni A. Ganie, Alain Compost, Graham F. Usher, Sylvia Yorath Teknik fotografi di alam bebas / penyusun Tamni A. Ganie, Alain Compost, Graham F. Usher, Sylvia YorathTeknik fotografi di alam bebas /penyusun Tamni A. Ganie, Alain Compost, Graham F. Usher, Sylvia YorathEC competition law / Robert Lane , John A. UsherSecrets of Industry / by Lewis C. Ord ; with an introduction by Sir George UsherAnnales des sciences naturelles / M. Milne Edwards