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Thro, Ann Marie ,  Roca, William M. ,  Guy, H ,  [The Cassava Biotechnology Network : objectives and accomplishments in biotechnology for a small farmer crop] ,  The Cassava Biotechnology Network : objectives and accomplishments in biotechnology for a small farmer crop

Restrepo M., José M. ,  Ospina, GI ,  Hernández, C. ,  Escobar Pérez, Roosevelt H. ,  Tohme, Joseph M. ,  Roca, William M. ,  [Participatory development of low-cost simplified rustic tissue culture for cassava] ,  Participatory development of low-cost simplified rustic tissue culture for cassava

Roca, William M. ,  Narvaez, J ,  Rodríguez, J. ,  Reyes, R. ,  Mafla, G. ,  Beltran, J. ,  Roa E, J.C. ,  Ramírez, H. ,  Rodríguez, A.M. ,  [Utilization of tissue culture techniques for the conservation and international exchange of cassava (Manihot esculenta) germplasm] ,  Utilization of tissue culture techniques for the conservation and international exchange of cassava (Manihot esculenta) germplasm

Roca, William M. ,  [Cultivo de tejidos en yuca] ,  Cultivo de tejidos en yuca

Szabados, L ,  Narváez Vásquez, J ,  Roca, William M. ,  [Técnicas para el aislamiento y cultivo de protoplastos de yuca (Manihot esculenta Crantz)] ,  Técnicas para el aislamiento y cultivo de protoplastos de yuca (Manihot esculenta Crantz)