18 1 10 Johanis P. Mogea Primary Author Djunaedi Gandawidjaja Additional Author Harry Wiriadinata Additional Author Rusdy E. Nasution Additional Author mixed material 9795790366 Bogor Puslitbang Biologi 2001 Arman Hakim Nasution Primary Author mixed material 9797631419 Yogyakarta Andi Yogyakarta 2006 Penelitian Ilmiah S. Nasution Primary Author mixed material 9795262351 Jakarta Bumi Aksara 2016 Nasution Additional Author mixed material 9795262351 Jakarta #N/A 1996 Andi hakim Nasution Additional Author mixed material Jakarta BHRATARA KARYA AKSARA 1984 Yunan Helmy Nasution Additional Author mixed material Jakarta Bayumoduia Publishing 1984 Nasution Additional Author mixed material Bandung Angkasa 1977 Nasution Additional Author mixed material Jakarta Angkasa 1977 Nasution Additional Author mixed material Jakarta Angkasa 1977 Nasution Additional Author mixed material Jakarta Angkasa 1977