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Judul	:	Age at first calving and factors influencing it in diary heifers kept by smallholder farmers in southern Malawi
Pengarang	:	Keitaro WATANABE, Brian LEWIS, Taurayi Belo MLEWAH
Sumber	:	Jurnal JARQ, Vol 51
Volume	:	51
No	:	4
Perpustakaan	:	pertanian
Abstrak	: